skip this one unless you are a 303 fetishist / masochist.
nothing but x0xb0x thru an Electro-Harmonix Tube Zipper pedal, tweaked to a fare-thee-well. Oh and a beat or something.
raaaaaahr!
http://seamslikereality.com/audio/x0...ipper_acid.mp3
or, something else:
http://seamslikereality.com/audio/tw...ty_xcerpt2.mp3
edit: the second link is actually pretty listenable