I agree with Jellybones, this is why I dn't want an Xbox360. The only reasons why I would get one is:
1. Sonic '06, it seems better than everyone thinks it is. if a PC port is possible, that would be excellent.
2. Halo 3, I've been a fan of Halo ever since I started playing it across LAN at school. I currently have Halo, Halo: Custom Edition and Halo 2: Vista. Halo 2 Vista is awesome with the Arbiter. That guy's awesome.
I would happily get a PS3 instead of an Xbox360. The Wii though, is plain awesomeness and is why I got that one first. SSBB, ooo yeah.