Mass Effect, Forza Motorsport 2, Halo 3, Fable 2, Alan Wake, BioShock, The Darkness, Shadowrun, Lost Planet, Lost Odyssey, Too Human, Blue Dragon, Assassin's Creed, Guitar Hero 2, GTA IV, Project Gotham Racing 4, and maybe even Resident Evil 5.

I think that's enough to persuade anyone.