I really love this documentary / art installation called Can I Get An Amen? by Nate Harrison about the history of the Amen Break. I highly recommend watching it. At one point, he mentions a now-defunct online radio station which he says will "[massage you] with endless permutations of the Amen Break.".
One late, coffee-fueled night at Music Hack Day London around 3AM after I had given up on my first hack, I decided I wanted to write my own Amen Break permutator. The half-baked result, only working in one browser (Firefox on OSX to be precise) was deployed to Heroku. I didn't even present it because it's just kind of silly, but it was very fun to create anyway.
This is the just the JavaScript portion of that page. I didn't include the drum samples because, well, you'll understand when you watch the documentary.
Amen, brother.