EA Games/EA BIG(Freedom FIghters, Need For Speed, & SSX series)
RARE(esp. the goldeneye era)
Pandemic(Mercenaries)
Konami(MGS series)
Square(FF series)
sega(virtual fighter)
RockStar/Rockstar North(GTA & Midnigh CLub series)
UBISoft(Prince of Persia series)
Capcom(Onimusha series & old skool street fighters)
surprised nobody mentioned:
Sony(Ratchet & Clank, God of War!, Gran Turismo series, Jak series, Socom series and Twisted Metal series)