I have a PS3 and very few games, but the ones I have are great. Resistance 2 is orsum- never played 1 so can't judge there. All of the Ratchet & Clank games. Tools of Destruction is fricking amazing, one of the best yet- which is saying something considering it's the fifth game in the series. Eight or ninth if you count the crappy PSP/DS games etc. I think A Crack In Time is out now, which has the potential for WIN- Doctor Nefarious <3. Saints Row II- well, go see Zero Punctuation's review on it. It is just GTA with less grit and more fun. It even has the same mobile phone-based cheats system, except when you use it it actually pauses the game
The Godfather II is pretty fun. Oh, and in the new year Space Marine is coming out, which also has the potential for WIN. The trailers look awesome. I'm rooting for zooming up two hundred feet into the atmosphere on a jump pack and then leaping down and cracking a planet open with the thunderhammer.