Bioware and Blizzard are both up there for me. I just bought a brand new computer so I could stop playing SC2 on crap settings, and my friends can stop *****ing about me "slowing down the game". I'm also pretty excited for Diablo 3, expecially since it sounds like they fixed the loot system so my loot-whore friend won't suck the fun out.
I'm a pretty big Nintendo fan as well, although probably more on the hardware end. The 3DS is really cool, but I haven't played any first-party games on it (excepting Find Mii, Fishing, Archery, and that ball-rolling one). Ghost Recon was awesome, though, and I'm eagerly looking forward to Dead or Alive.
Speaking of... Dead or Alive is a series I love, although I don't care much about the other games released by Tecmo/Team Ninja.