MotorStorm (reasonably popular)
Ninja Gaiden (Sigma)
Far Cry 2 (this wasn't really even that popular)
That's about it, I think. I have mainstream tastes, it seems.
I'm seeing a lot of "Halo" in this thread, which I find odd, seeing as Halo 3 is nearing 10 million sales, and will cross 12 million by the end of the gen...