haha crystal method, they made the music for Bones, didn't they ? I always thought they probably make some other good stuff.
Anyway not quoting what was already said (Daft Punk, Chemical bros):
Ed Banger Records (DJ Mehdi - SebastiAn - Krazy Baldhead - Justice - Mr Oizo fuck yes - Mr Flash fuck yes - etc) - DJ Shadow - Crystal Castles - Fatboy Slim of course - Duck Sauce I guess - gesaffelstein - jackson & his computer band (just the one album, but over and over) - Siriusmo is god- simian [mobile disco] - Surkin (some albums) - Vitalic (classic shit) - Zombie Nation (praise the lord) - flying lotus - (general elektriks) - (j dilla, praised be his name) - Kraak & Smaak - KOAN Sound - royksopp all the way :) - 4mat (cool chipstuff) - i guess i could include Prodigy cause they only do electronic bs nao - no point in saying it but Gorillaz - Deadmau5 actually does good stuff - lots of other good stuff i could mention if i remembered - lots of random one-shot beauties I don't think are worth menioning
including some less "electronic" groups / artists : Caribou - Connan Mockasin - general elektriks - metronomy, aetcaetera