diff --git a/docetl/runner.py b/docetl/runner.py
index e02439d8..74a7c461 100644
--- a/docetl/runner.py
+++ b/docetl/runner.py
@@ -344,6 +344,14 @@ def execute_step(
                 )
                 continue
 
+            # Delete existing intermediate file before running operation
+            if self.intermediate_dir:
+                checkpoint_path = os.path.join(
+                    self.intermediate_dir, step["name"], f"{operation_name}.json"
+                )
+                if os.path.exists(checkpoint_path):
+                    os.remove(checkpoint_path)
+
             op_object = self.find_operation(operation_name).copy()
             op_object.update(operation_config)
 
diff --git a/website/src/app/playground/page.tsx b/website/src/app/playground/page.tsx
index cd8f12d6..afdfcb0a 100644
--- a/website/src/app/playground/page.tsx
+++ b/website/src/app/playground/page.tsx
@@ -353,8 +353,8 @@ const CodeEditorPipelineApp: React.FC = () => {
                         <MenubarRadioItem value="forest">
                           Forest
                         </MenubarRadioItem>
-                        <MenubarRadioItem value="magestic">
-                          Magestic
+                        <MenubarRadioItem value="majestic">
+                          Majestic
                         </MenubarRadioItem>
                         <MenubarRadioItem value="sunset">
                           Sunset
diff --git a/website/src/components/ColumnDialog.tsx b/website/src/components/ColumnDialog.tsx
index 64c32c26..5ef6be77 100644
--- a/website/src/components/ColumnDialog.tsx
+++ b/website/src/components/ColumnDialog.tsx
@@ -1,4 +1,4 @@
-import React, { useState, useEffect, useCallback } from "react";
+import React, { useState, useEffect, useCallback, useMemo } from "react";
 import { Dialog, DialogContent } from "@/components/ui/dialog";
 import { Button } from "@/components/ui/button";
 import {
@@ -38,6 +38,11 @@ import {
   TooltipTrigger,
   TooltipProvider,
 } from "@/components/ui/tooltip";
+import { ColumnStats } from "@/components/ResizableDataTable";
+import {
+  WordCountHistogram,
+  CategoricalBarChart,
+} from "@/components/ResizableDataTable";
 
 interface ObservabilityIndicatorProps {
   row: Record<string, unknown>;
@@ -97,8 +102,154 @@ export interface ColumnDialogProps<T extends Record<string, unknown>> {
   onNavigate: (direction: "prev" | "next") => void;
   onJumpToRow: (index: number) => void;
   currentOperation: string;
+  columnStats: ColumnStats | null;
 }
 
+function calculatePercentile(value: number, values: number[]): number {
+  if (values.length === 0) return 0;
+
+  const sortedValues = [...values].sort((a, b) => a - b);
+  const index = sortedValues.findIndex((v) => v >= value);
+
+  // If value is smaller than all values in the array
+  if (index === -1) return 100;
+
+  // If value is larger than all values in the array
+  if (index === 0) return 0;
+
+  // Calculate percentile ensuring it's between 0 and 100
+  return Math.max(
+    0,
+    Math.min(100, Math.round((index / sortedValues.length) * 100))
+  );
+}
+
+interface ValueStatsProps {
+  value: unknown;
+  columnStats: ColumnStats | null;
+  data: Record<string, unknown>[];
+  columnId: string;
+}
+
+const ValueStats = React.memo(
+  ({ value, columnStats, data, columnId }: ValueStatsProps) => {
+    if (!columnStats) return null;
+
+    const currentValue =
+      typeof value === "number"
+        ? value
+        : typeof value === "string"
+        ? columnStats.type === "string-chars"
+          ? value.length
+          : value.split(/\s+/).length
+        : Array.isArray(value)
+        ? value.length
+        : typeof value === "boolean"
+        ? value
+          ? 1
+          : 0
+        : null;
+
+    // Get all actual values from the data
+    const allValues = data
+      .map((row) => {
+        const val = row[columnId];
+        if (val == null) return null;
+        if (typeof val === "number") return val;
+        if (typeof val === "string")
+          return columnStats.type === "string-chars"
+            ? val.length
+            : val.split(/\s+/).length;
+        if (Array.isArray(val)) return val.length;
+        if (typeof val === "boolean") return val ? 1 : 0;
+        return null;
+      })
+      .filter((v): v is number => v !== null);
+
+    const percentile =
+      currentValue !== null
+        ? calculatePercentile(currentValue, allValues)
+        : null;
+
+    return (
+      <div className="p-4 border-b bg-muted/5">
+        <div className="flex items-center gap-4 mb-2">
+          {percentile !== null && (
+            <div className="flex-none">
+              <div className="text-3xl font-bold text-primary">
+                {percentile}
+                <span className="text-lg">th</span>
+              </div>
+              <div className="text-xs text-muted-foreground">percentile</div>
+            </div>
+          )}
+
+          <div className="flex-1 h-12">
+            {columnStats.isLowCardinality ? (
+              <CategoricalBarChart data={columnStats.sortedValueCounts} />
+            ) : (
+              <WordCountHistogram
+                histogramData={columnStats.distribution.map((count, i) => ({
+                  range: String(
+                    Math.round(columnStats.min + i * columnStats.bucketSize)
+                  ),
+                  count,
+                  fullRange: `${Math.round(
+                    columnStats.min + i * columnStats.bucketSize
+                  )} - ${Math.round(
+                    columnStats.min + (i + 1) * columnStats.bucketSize
+                  )}${
+                    columnStats.type === "array"
+                      ? " items"
+                      : columnStats.type === "string-chars"
+                      ? " chars"
+                      : columnStats.type === "string-words"
+                      ? " words"
+                      : ""
+                  }`,
+                }))}
+              />
+            )}
+          </div>
+        </div>
+
+        <div className="grid grid-cols-4 gap-2 text-xs">
+          <div className="space-y-0.5">
+            <div className="font-medium">Type</div>
+            <div className="text-muted-foreground">{columnStats.type}</div>
+          </div>
+          <div className="space-y-0.5">
+            <div className="font-medium">Distinct Values</div>
+            <div className="text-muted-foreground">
+              {columnStats.distinctCount} / {columnStats.totalCount}
+            </div>
+          </div>
+          <div className="space-y-0.5">
+            <div className="font-medium">Current</div>
+            <div className="text-muted-foreground">
+              {currentValue}
+              {columnStats.type === "array"
+                ? " items"
+                : columnStats.type === "string-chars"
+                ? " chars"
+                : columnStats.type === "string-words"
+                ? " words"
+                : ""}
+            </div>
+          </div>
+          <div className="space-y-0.5">
+            <div className="font-medium">Range</div>
+            <div className="text-muted-foreground">
+              {columnStats.min} - {columnStats.max}
+            </div>
+          </div>
+        </div>
+      </div>
+    );
+  }
+);
+ValueStats.displayName = "ValueStats";
+
 export function ColumnDialog<T extends Record<string, unknown>>({
   isOpen,
   onClose,
@@ -109,6 +260,7 @@ export function ColumnDialog<T extends Record<string, unknown>>({
   onNavigate,
   onJumpToRow,
   currentOperation,
+  columnStats,
 }: ColumnDialogProps<T>) {
   const [splitView, setSplitView] = useState(false);
   const [compareIndex, setCompareIndex] = useState<number | null>(null);
@@ -252,6 +404,12 @@ export function ColumnDialog<T extends Record<string, unknown>>({
               </Tooltip>
 
               <div className="flex-1 overflow-auto">
+                <ValueStats
+                  value={value}
+                  columnStats={columnStats}
+                  data={data}
+                  columnId={columnId}
+                />
                 <div className="px-4 py-2">{renderContent(value)}</div>
               </div>
 
diff --git a/website/src/components/PipelineGui.tsx b/website/src/components/PipelineGui.tsx
index e2d3ee52..db7ad39c 100644
--- a/website/src/components/PipelineGui.tsx
+++ b/website/src/components/PipelineGui.tsx
@@ -165,9 +165,6 @@ const PipelineGUI: React.FC = () => {
   const [tempAutoOptimizeCheck, setTempAutoOptimizeCheck] =
     useState(autoOptimizeCheck);
   const [tempOptimizerModel, setTempOptimizerModel] = useState(optimizerModel);
-  const [tempSampleSize, setTempSampleSize] = useState(
-    sampleSize?.toString() || ""
-  );
   const [tempCurrentFile, setTempCurrentFile] = useState<File | null>(
     currentFile
   );
@@ -377,12 +374,6 @@ const PipelineGUI: React.FC = () => {
     }
   }, [optimizerModel]);
 
-  useEffect(() => {
-    if (sampleSize) {
-      setTempSampleSize(sampleSize.toString());
-    }
-  }, [sampleSize]);
-
   const handleFileUpload = async (
     event: React.ChangeEvent<HTMLInputElement>
   ) => {
@@ -659,13 +650,6 @@ const PipelineGUI: React.FC = () => {
 
   const handleSettingsSave = () => {
     setPipelineName(tempPipelineName);
-    setSampleSize(
-      tempSampleSize === ""
-        ? null
-        : tempSampleSize === null
-        ? null
-        : parseInt(tempSampleSize, 10)
-    );
     setCurrentFile(tempCurrentFile);
     setDefaultModel(tempDefaultModel);
     setIsSettingsOpen(false);
@@ -906,6 +890,91 @@ const PipelineGUI: React.FC = () => {
                   </div>
                 </PopoverContent>
               </Popover>
+
+              <TooltipProvider>
+                <Tooltip>
+                  <TooltipTrigger asChild>
+                    <div className="flex items-center">
+                      <Button
+                        variant="outline"
+                        size="sm"
+                        className="h-8 px-2 flex items-center gap-2"
+                      >
+                        <PieChart size={14} />
+                        <Input
+                          type="number"
+                          value={sampleSize || ""}
+                          onChange={(e) => {
+                            const value = e.target.value;
+                            setSampleSize(
+                              value === "" ? null : parseInt(value, 10)
+                            );
+                          }}
+                          className="w-16 h-6 text-xs border-0 p-0 focus-visible:ring-0"
+                          placeholder="All docs"
+                        />
+                      </Button>
+                    </div>
+                  </TooltipTrigger>
+                  <TooltipContent>
+                    <p>Set sample size for operations</p>
+                  </TooltipContent>
+                </Tooltip>
+              </TooltipProvider>
+            </div>
+
+            <div className="flex items-center border-l pl-2">
+              <div className="flex items-center space-x-1">
+                <TooltipProvider>
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        variant="ghost"
+                        size="icon"
+                        onClick={() => fileInputRef.current?.click()}
+                        className="h-8 w-8"
+                      >
+                        <FileUp size={16} />
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>
+                      <p>Load from YAML</p>
+                    </TooltipContent>
+                  </Tooltip>
+                </TooltipProvider>
+                <Input
+                  type="file"
+                  ref={fileInputRef}
+                  onChange={handleFileUpload}
+                  accept=".yaml,.yml"
+                  className="hidden"
+                />
+                <TooltipProvider>
+                  <Tooltip>
+                    <TooltipTrigger asChild>
+                      <Button
+                        size="icon"
+                        variant="ghost"
+                        onClick={() => handleExport()}
+                        className="h-8 w-8"
+                      >
+                        <Download size={16} />
+                      </Button>
+                    </TooltipTrigger>
+                    <TooltipContent>
+                      <p>Save to YAML</p>
+                    </TooltipContent>
+                  </Tooltip>
+                </TooltipProvider>
+                <Button
+                  size="icon"
+                  variant="ghost"
+                  onClick={() => setIsSettingsOpen(true)}
+                  className="h-8 w-8"
+                >
+                  <Settings size={16} />
+                </Button>
+              </div>
             </div>
 
             <div className="flex items-center border-l pl-2">
diff --git a/website/src/components/ResizableDataTable.tsx b/website/src/components/ResizableDataTable.tsx
index 2393abef..ff053d84 100644
--- a/website/src/components/ResizableDataTable.tsx
+++ b/website/src/components/ResizableDataTable.tsx
@@ -68,7 +68,7 @@ export type ColumnType<T> = {
   id?: string;
 };
 
-interface ColumnStats {
+export interface ColumnStats {
   min: number;
   max: number;
   avg: number;
@@ -102,7 +102,7 @@ function calculateDistinctValueCounts(
   return valueCounts;
 }
 
-function calculateColumnStats(
+export function calculateColumnStats(
   data: Record<string, unknown>[],
   accessor: string
 ): ColumnStats | null {
@@ -256,7 +256,7 @@ const truncateString = (str: string, maxLength: number = 20) => {
   return str.slice(0, maxLength) + "...";
 };
 
-const WordCountHistogram = memo(
+export const WordCountHistogram = memo(
   ({
     histogramData,
   }: {
@@ -328,7 +328,7 @@ const WordCountHistogram = memo(
 );
 WordCountHistogram.displayName = "WordCountHistogram";
 
-const CategoricalBarChart = memo(
+export const CategoricalBarChart = memo(
   ({ data }: { data: { value: string; count: number }[] }) => {
     // Memoize total count calculation
     const totalCount = useMemo(
@@ -1339,6 +1339,7 @@ export default function ResizableDataTable<T extends Record<string, unknown>>({
           }}
           onJumpToRow={(index) => setCurrentValueIndex(index)}
           currentOperation={currentOperation}
+          columnStats={columnStats[activeColumn]}
         />
       )}
     </div>
diff --git a/website/src/contexts/ThemeContext.tsx b/website/src/contexts/ThemeContext.tsx
index 125a0440..fb95baf4 100644
--- a/website/src/contexts/ThemeContext.tsx
+++ b/website/src/contexts/ThemeContext.tsx
@@ -5,7 +5,7 @@ import React, { createContext, useContext, useEffect, useState } from "react";
 export type Theme =
   | "default"
   | "forest"
-  | "magestic"
+  | "majestic"
   | "sunset"
   | "ruby"
   | "monochrome";
@@ -65,12 +65,12 @@ const themes = {
     input: "150 30% 18%",
     ring: "150 100% 50%",
     chart1: "150 70% 40%",
-    chart2: "120 65% 45%",
-    chart3: "180 60% 35%",
-    chart4: "90 55% 45%",
-    chart5: "165 70% 40%",
+    chart2: "35 85% 50%",
+    chart3: "195 65% 40%",
+    chart4: "105 60% 45%",
+    chart5: "270 45% 45%",
   },
-  magestic: {
+  majestic: {
     background: "270 30% 99%",
     foreground: "270 10% 5%",
     card: "270 20% 97%",
@@ -91,10 +91,10 @@ const themes = {
     input: "270 30% 18%",
     ring: "270 100% 50%",
     chart1: "270 70% 60%",
-    chart2: "290 65% 55%",
-    chart3: "250 60% 50%",
-    chart4: "310 70% 45%",
-    chart5: "230 65% 55%",
+    chart2: "330 65% 55%",
+    chart3: "210 60% 50%",
+    chart4: "30 70% 55%",
+    chart5: "150 55% 45%",
   },
   sunset: {
     background: "30 30% 99%",
@@ -143,10 +143,10 @@ const themes = {
     input: "345 30% 18%",
     ring: "345 100% 50%",
     chart1: "345 85% 55%",
-    chart2: "375 80% 50%",
-    chart3: "315 75% 45%",
-    chart4: "0 70% 50%",
-    chart5: "330 80% 55%",
+    chart2: "195 70% 50%",
+    chart3: "45 75% 55%",
+    chart4: "315 65% 45%",
+    chart5: "165 60% 50%",
   },
   monochrome: {
     background: "0 0% 98%",