I think it's safe to say that Nintendo dominated E3 this year with its unveiling of the Wii U, and, honestly, they deserve. I was thoroughly impressed with the console, especially its controller.
a 6.2-inch LCD touch-screen
the ability to transfer your game on-screen to your controller
Nintendo seems to be attempting to enter the same league as Microsoft and Sony, in terms of graphics and online play. Hopefully, they'll finally be able to with the Wii U. I really disliked the Wii because of its lack of HD support and the Wiimote, so I'm really looking forward to the Wii U. It's expected to be released in late 2012.