Atlus. Just about everything they have made is either, really good, great, or Persona 4.
Hidetaka Miyazaki/From Software: Note to mention all of From's games have that one thing most games don't have these days: ATMOSPHERE. Its lacking, but these guys nailed it. Also Miyazaki is responsible for the archers in the Anor Londo section of Dark Souls... respect sir, respect.
Suda 51: Why even bother talking about this psychopath, he is awesome.
Shinji Mikami/Platinum Game aka New Clover Studios: Very veeeeery unique experiences from these guys. And its a shame Mikami left Capcom, but hey after what they do I would too. Good luck on MGS Revengeance Mikami, hope you make it feel more like Devil May Cry then the actual upcoming Devil May Cry. Speaking of MGS...
Hideo Kojima/Kojima Productions: Great job on the MGS franchise, a favor though... please make Zone of the Enders 3 already!!!
and I saved the best for last...
Tameem: hahahaha no, F that guy he can spend an eternity in hell alone.
Team Ico: SOTC and Ico are masterpieces, hope The Last Guardian gets finished.