Multi player games for xbox 360???

hey i just got an xbox 360 for xmas and really love it. but i'm having trouble trying to find multiplayers that aren't as gory and violent. i have halo 2 for now, and its holding me over currently, and that was a stretch with my parents. i was just wondering if there were any not-so-violent games that have really fun multiplayer modes. before forza 2 comes out that is... :)