1 - Donkey Kong Country Returns - It takes me back to the pinacle of 2D platforming... I had so much fun with the SNES games and this one looks no different quality wise. Day one purchase with a huge fanboy smile on my face.
2 - Kirby's Epic Yarn - it looks so cute I would be ok just to watch it. Co-op, lots of retro charisma. Epic.
3 - Metroid: Other M - What can I say about this game? Glad it's around the corner.
4 - Golden Eye 007 Wii - Up to 4 player local multiplayer, and a remake of one of my N64 favourite games of all time. Win.
5 - Rayman Origins - It looks gorgeous, maybe one of the most gorgeous games shown at E3. It would rank better in my list if it was not an episode game. I don't like how it works. I rather have my game in a disc.
Special mentions for Little Big Planet 2 and GT5, both games which I may purchase but don't got me really excited, though they definetely look great.