Uncharted gameplay trailer was amazing, as was God of War 3. I'll be buying a PS3 closer to the release of those two, early next year. I'd like to wait for the slim console if I can, not that it's been announced dammit. Another game to look forward to is Last Guardian (or Ico 3). Yet another reason I'll need a PS3.
I'm a bit disappointed with a sequel for L4D so soon. I'd prefer a bit more DLC and it feels like the game hasn't aged enough yet. They're laying their cards on the table too soon.
New Castlevania looks alright. I'll probably get it, I suppose. Alan Wake is a bit exciting. And who saw the trailer for Dark Complex? Looks great for an arcade game.
I've always been a bit of a Nintendo fanboi, but this E3 was really, really weak for them. Admittedly I watched their stuff third (after the other big two) so maybe I'm comparing too much, but frankly they were... boring. They had nothing really. Never thought I'd say that any time soon.