Wow man, you're a game buying beast! Haha, that's what I like to see. So if my count is correct, u now have Uncharted 1 & 2, Killzone 2, MGS4, and are ordering inFAMOUS soon? If so, u now have my top 3 games not only on the ps3 but of all time. MGS4 & Uncharted 2 are my #1 & #2 favorite games, and inFAMOUS is my 3rd favorite game of all time. U are very wise to pick up inFAMOUS, excellent game all around. I sunk in probably about 40 hours into it overall. Anyways, other great PS3 exclusives:
--LittleBigPlanet -->amazing game; looks childish but it is seriously a blast, especially with the four player local coop. I take this game over to my friends' houses (we're all 22-23 years old) and play 4-player and we just die laughing and have so much fun playing. One of those friends was a die-hard xbox 360 guy but he got a ps3 for Christmas just so he could get LittleBigPlanet.
--Ratchet & Clank 1 & 2--> these games are pretty fun, i have both. one of the coolest things is that there are so many goofy, cool, and brilliant weapons to play around with and modify and upgrade. Oh, and the games all have a great sense of humor, too. Will make u laugh.
--Resistance 1 & 2--> R1 single player is amazing imo, loved it and all the different weapons u get are amazing; didn't really try the multiplayer, but i've heard it's good; R2 single player imo wasn't as good as R1, though they did more massive amounts of enemies + bigger bosses (one is the size of a skyscraper); BUT the online is amazing-60 person matches for multiplayer, but the real prize in R2 is the online coop-this had me hooked and is a blast.
--MAG--> this just came out...if ur into first person shooters online, check this game out. it has 256-player matches online. most users have a lot of good things to say about it, many are crazy about it.
Okay, since u are new to the PS3, I'm gonna give u a short list of UPCOMING PS3 exclusives as well:
--Heavy Rain-->check this game out-gonna be a day one pick-up for me. Comes out Feb 23!
--God of War III-->I'm sure u've heard of this game. but just for the record, i'm not into this genre of games at all but the more i check out this game the more I want to play it. if ur even remotely into this type of game, i think it has to be a must buy. looks incredible. I think the release date is March 16th? Yeah I think that's it. Oh, and the "God of War collection" just came out as a ps3 game. Has both God of War 1 &2 on a single bluray disc, all for like 30-40$$
--The Last Guardian--> next game from Fumito Ueda of Ico games (creator of the games "Ico" and "Shadow of the Colossus"). Looks incredible, and I'm sure it's going to be incredible considering his history. Shadow of the Colossus just got rated the #1 game of all time on some game website's "top 100 games in history" list.
--Twisted Metal PS3--> this game has no trailers, no pics, no info whatsoever but it is definitely coming, and i think most likely this year. I love this series and can't wait for it to come to ps3. will be epic. Oh, and the creators of this game are also making 2 other ps3 exclusives in the future.
--Agent-->a ps3 exclusive being made by the creators of the Grand Theft Auto games.
I think there are other upcoming ps3 exclusives but that's all i can think of right now. Anyways, hope this helped man. Happy gaming!