Adachi Tomomi, Alex Baker, Ian Baxter, Ithai Benjamin, Lesley Flanigan, Lorin Edwin Parker, Peter Blasser, Phil Archer, Todd Bailey, Tommy Stephenson & Patrick McCarthy, Tuomao Tammenpaa, and Vasco Alvo are all featured in Nicolas Collins' extraordinarily good book Handmade Electronic Music.
InstantSOUP is good for the android's soul An open electronics hobbiest kit geared towards design students in non-engineering disciplines. It's built around a simple I/O board that can interface with your computer (MacOS, Windows or Linux) and, wiring a programming language. Wiring is in turn based around the nifty Processing programming language.
"Circuit bending is the electronic art of the implementation of the creative audio short-circuit. This renegade path of electrons represents a catalytic force capable of exploding new experimental musical forms forward at a velocity previously unknown. Anyone at all can do it; no prior knowledge of electronics is needed." - Reed Ghazala. More proselytizing from Ghazala, and a LiveJournal for up-to-the-minute advice, feedback and opinions.
Circuit Bending is hacking electronic games and musical toys to produce new sounds. Twisted Speak'n'Spells and Pikachus, for example.