The Null Device
And now the next "reality TV" craze: Shag My Bird. A cross between a dating show, a reality TV show and Jerry Springer.
Links to various homemade TB-303 clones. Mind you, most of them eschew putting in the step sequencer and replace it with a MIDI interface, so you have to lug a computer around. What I'd like to see would be a 303 clone with a sequencer, and which is no larger than a real 303, as opposed to a 19" rack module. (If it's going to be bound to a computer-based studio, you may as well use a softsynth.)