Grabbed by the Ghoulies - A game that was just really, really good. It had great visuals, with a really cool style to go along with it, fun gameplay that was like a beat-em-up throw back, and the Rare charm. It was kind of short, and I can see how someone would be disappointed if they expected more than a pretty beat-em-up, but I loved it.
Conker - This game still looks better than most 360 games. I agree that if you had played the crap out of the n64 version that this probably wouldn't appeal to you, but if you hadn't (like me), this was an awesome game. It's a shame this isn't BC.
Kameo - Beautiful game with a charming/quirky little fantasy setting, and easily the best 360 launch game. I agree that Kameo really needed a sword (beheading trolls as you charge with the horse would have been immense), but other than that, it's really hard for me to find things wrong with this game. I honestly can't wait for the sequel.
Perfect Dark Zero - A good looking FPS that deserved the 9/10 that gamespot gave it, but got a lot of **** because of its name, rightfully so. The setting was bad, and the art style didn't seem right....but still, the gameplay was awesome, and made up for the story being total ass. Not a good Perfect Dark game, but on it's own merits, an amazing FPS.