The only game I have at the moment for mine is NFS:Shift, and it is ok. It is fairly fun, but can get repetative after a bit, but then when you cvome back to it it is fun again. It is good in short bursts.
I'm looking for a cheap copy of Crisis Core too, once I get one, I'll tell you what I think of it.
Get it hooked up to the internet and go to the playstation store and try some demos
My brother has the killzone games, jak and daxter (they are fun) some need for speed and god of war. they are awesome on long car/train trips!
wow i forgot about crisis core that game is awesome i spent a number of a hours on that game.