Alan Wake is one game that I feel like I missed out on for not having a 360. I know it gets spotty reviews, but it looks like the kind of game that I would have enjoyed.
As expected, Tomb Raider is pretty awesome so far. My wife and kids are out of town, so I plowed through a big chunk of it yesterday, and I'm guessing about 2/3 of the way through the main story. The obvious comparison is to Uncharted, but this game was also pretty clearly inspired by Batman. It has the same quasi-linear structure where you move along through the island, you can go back later and explore for collectables/puzzles, and as you get more gadgets you can access stuff that you had to pass by the first time. TR is definitely in the same tier as Uncharted or Batman in terms of overall quality.
Two minor complaints. First, the QTEs seem really messed up. I think it's impossible to pass them without knowing what the button prompt is going to be ahead of time. Second -- and I know this is a dumb thing to complain about but I'm going to anyway -- the trophy list kind of sucks. Way too many online trophies and not enough for the SP campaign. How do you not have a trophy for beating the game on Hard? But you know a game is really good when this is the only stuff you can find to nitpick.