This 'lil demo is fun to dink around with, though it might take a little learning. Start with the Roland TR-909 drum machine, it's more straightforward. Although it's step-input system is the same as the Roland TB-303 synthesizer uses so it's a good jumping off point.
Seriously, try it out, it's fun to mess around with the classics. Fun stuff!

OOOH Especially the hand clap! It's all about the 909's hand clap, everyone loves that thing. It's like... human instinct.
Wise man say, Everybody Needs A 303.... (Fatboy Slim, that is)
But personally I'm down with the