I deleted my E3 thread in game discussion since this thread exists. Yeah X looked awesome.
I personally was very disappointed by Nintendo's presentation. I was expecting a large scale 3D mario game (Mario Universe perhaps). Mario 3D world seems too much like the 3DS game, and I'm not a fan of the isometric viewing or 8 directional character control.
Nintendo was also pretty quiet about the new HD Wind Waker. It's 3 months away, and it would have been nice to get some details, or maybe info on whether they're going to include those 2 unreleased dungeons or not.
The biggest disappointment by far was that Retro Studio's BIG SECRET GAME that they've been working on all this time, turned out to be yet another Donkey Kong Returns game for the WiiU. I was hoping for metroid. Heck, I would have been preferred Starfox or a new IP. A sidescrolling DK game was the last thing I wanted.
Smash Bros looked cool and I was glad to see Megaman, but it also looks a bit familiar. Hopefully they spice it up a bit and give us a great adventure mode and some event matches.
Sony definitely won E3.