Psychonauts (Xbox)
Brothers in Arms (Xbox)
Grand Theft Auto: San Andreas (PS2)
Splinter Cell: Chaos Theory (Xbox)

Get Psychonauts if:
1. You like platformers (a la Ratchet and Clank)
2. You like(d) Day of the Tentacle, Sam and Max, Grim Fandango, etc. (the game is made by the creator of all those games)
3. You like Tim Burton movies
4. You like good games.

I've never played a game as creative as Psychonauts. It is so utterly twisted and gorgeous that I end up running around just to look at stuff, rather that advance through the game. By twisted, I mean something like this: Traveling into your own brain; seeing an old gypsy wagon covered in mist, with TV static blaring in the wagon's door; walking in the door and realizing that the door is gone and that you're trapped in a room covered in static; punching the wall and cracking it open, and jumping through the hole, which turns out to be a hole in a giant egg; etc. It's fudged up and awesome. I give it a 9/10.