Diomedes1976 on 31 December 2008
1.Naughty Dog
2.Team Ico
3.Insomniac
4.Polyphony
5.Relentless Software (Buzz games )
But there are many others as Guerrilla ,Studio Liverpool ,Evolution ,Zipper ,Sucker Punch ,Japan Studio ,Santa Monica ,Eat Sleep Play ,Clap Hanz ....