http://www.sonicyouth.com/gossip/showthread.php?t=5305
http://www.sonicyouth.com/gossip/showthread.php?t=5399
http://www.sonicyouth.com/gossip/showthread.php?t=2048
and about a million other threads.
Here's some to get you started:
AFX
Alva Noto
Amon Tobin
Aphex Twin (highly reccomended)
Arovane
Autechre (highly reccomended)
Bomb 20
Cato
Cex
Chris Clark
Kit Clayton
Datach'i
Richard Devine
Eight Frozen Modules (highly reccomended)
Tim Exile
Fennesz (highly reccomended though probably not what you're looking for)
the Field ("Here We Go Sublime" is highly reccomended though it may seem kinda cheesy upon first listen; strangely addicting record, though, I listen to it all the time actually)
Flashbulb
Bernard Fleischmann
Fluke
Four Tet (not really a fan but there's some fans here!)
Funkstorrang
Geom
Gescom
Ryoji Ikeda (highly reccomended... probably not the best "first exposure" to electronic music, this is mainly high pitched noisey mind melting sine wave glitch stuff... really hard to listen to for a lot of people, but I love it)
Isan
Jega
Kid606 (not really a fan myself, but lots of people like him)
Lammo
Machine Drum
Mira Calix
Mouse on Mars
Mum (this is kinda like.. indie pop.. at times, but it's still very "electronic" and worth checking out)
Ochre
Oval
Pan Sonic
Marco Pasarani
Phoenicia (highly reccomended, especially the "Odd Jobs" single which is is a bunch of remixes of a song Phoenicia never released, so all these artists kinda take the original elements and do their own work with them.. has my all time favorite work by Autechre on it)
Phonem
Plaid
Plastikman
Pole
Prefuse 73
Sabrepulse
Schneider Tm
si.cut.db
Squarepusher
Nobukazu Takemura (highly reccomended)
To Rococo Rot
Tu_Um
u-ziq
Venetian Snares
Check out Mego records, Warp records, raster-norton records, Planet Mu records, etc. Or check other threads.