Lego Star Wars II: The Original Trilogy:

Working on episode V right now. Worth the $17 I spent at Gamestop to get this 360 game. Enjoyable to an extent.

Mario and Luigi: Partners in Time:

Got about an hour in yesturday but my girl friend got nearly 5 hours in two days, and that's saying something for her.

Advance Wars: Dual Strike:

Got to love 4 player AW.

If I were you and you owned a DS and 360, I'd buy these three games.