Kameo (No)
-Gears of War (wait for gears of war 2)
-Bioshock (yes)
-Halo 3 (yes)
-Mass Effect (yes)
-Lost Odyssey (yes)
-Ninja Gaiden 2 (I'll tell you when I get further into it)
-GTA 4 (yes, tho don't buy into the "best game ever" hype)
Do yourself a favour and pick up either G.R.A.W and CoD4. I hear good things about Eternal Sonata, tho' I've only played the demo. If you're into your sports, pick up Fight Night, Forza, and Euro 2008.