Gears of War looks pretty decent from what I've seen, and I enjoyed Call of Duty 1 and 2 on PC, so 3 might be alright. Rainbow Six Vegas has had fantastic reviews, but I dunno, most of the previous Rainbow game didn't do it for me.
Hmm, but which of those games is *new*? play one, play them all.
I think a WII is what I need here, even though im not as happy with the WII as i first thought i would be, it seems it'd be better than an X360 :)