hmm I didn't even know it closed until another user pointed it out to me, weird.

Sucker punch gets my vote for obvious reasons 

Naughty dog and Polyphony Digital. Gran Turismo is my favorite series next to the Ratchet and Clank and Jak and Daxter series. but he left out Studio Japan and team Ico..

Studio Liverpool :(.

Edit: If it's only for sony which is what your thread seems to be implying.

Falcom.

I suppose it fits well here because Falcom has pretty much limited development to Sony consoles last/this gen. But I like them regardless of the platform they develop for. Development flow has gone from retro platforms to SNES to PC to PSP to PSV and now PS3 as well. I'll buy whatever they develop for next (seems to be PS4).

its pretty hard to say, though at the moment its naughty dog, though GG are a very close second along with SSM