Okami needs more love. It's criminal how few people have played it! Okami is definitely a must buy if you like Zelda style games. IMO it was a better game overall than the last two 3D entries into the Zelda series. Be warned that it's a slow starter; loads of talk, loads of cutscenes, loads of hand-holding. Survive the first few hours and it becomes awesome.

Quite a few of us played dead space, and the overall consensus was positive. The main letdown for me was that the last part of the game isn't as good as the first part. I got a lot of games in this year's Christmas release rush, and out of those I have played this one remains right near the top. Possibly because I wasn't intending to get it, and expected very little from it.

Mass Effect. If you haven't played the PC version pick it up on the 360. It's tied with Planescape: Torment as my favourite western style RPG.

If you like Star Wars and aren't allergic to fun, get Lego Star Wars: The Complete Trilogy. Pure joy on a disc, and moreso if you play in co-op.

Played Bioshock? If not the xbox version is dirt cheap nowadays. Ditto Assassin's Creed. They're both games which gather strong reactions, love or hate.