If you can get past the desperately pretentious amateur sociology ("the super-structure of its cultural context is dramtically reconsidered"), Bassline Baseline, Nate Harrison's short video history of the TB303 is quite entertaining. On the same site, Can I get an Amen? is a really interesting history of the Amen break. Just try to avoid the horrible truth that it's actually an 'installation' - a radio show accompanied by a film of a spinning SL1200 and a bald guy in a gallery. (Thanks Tommy and Peter K)