Not really in order:
Daft Punk
Justice
The Used
The Phantom's Revenge
Louis La Roche
Rediscover
Select Start
Tool
3OH!3
Michael Jackson
Feadz
Mr. Oizo
Menomena
MGMT
Boys Noize
The Bloody Beetroots
Mr. Flash
The Disko Starz
Xinobi
Moulinex
Sonny Moore
College
Le Knight Club
Cobra Starship
Tony Kaltenberg
Chiodos
The Devil Wears Prada
Sight Through Blind Eyes
Anoraak
Thomas Bangalter
Jean Moustache
And quite alot more.
(That's one long list!)
Electro and French house are easily my favorites.