What are some good PS3 games?

I haven't got MGS4 yet, but I played about halfway through MGS3 (I didn't finish because I got my ps3 and never hooked my ps2 to a new TV, but I will) And it was a TON of fun. I want to finish it still. If you like stealth action, it's a total blast. It's probably really cheap, too. Also, get GOW3 and Uncharted 1 and 2, excellent ps3 exclusives.