Uncharted 2!!! 

If you don't go and buy the game, I am going to track you down, and force you to play the game, so go and play it now!!!!!!!!!!!!!!!!!!!!!!!!

if you are a gamer get Demon's Souls and Yakuza 3, if you don't  then sell it.

resistance 1-2

Uncharted 1-2

Killzone 2

Infamous

God of war 3

LPB

Well I guess I'll only recommend exclusives since you have a 360.

Uncharted series - for obvious reasons

Killzone 2 - I know you said 360 satisfies your FPS needs but you should still check out KZ2 especially since its cheap now.

Resistance series - For the exact same reason as Killzone 2. They're amazing, exclusive, and inexpensive now.

Ratchet and Clank - Great games and Tools of Destruction is only like $20 now. A Crack In Time is newer so its still kinda pricey though.

And lastly keep $60 tucked away for GT5 which is out early November.

sounds like God of War 3 is where you should start,

infamous is great fun if you ask me,uncharteds,demons souls,valkyria all the usual names

have you got an HDTV i assume you have

NOT ENOUGH o0

Demon Soul's
Wipeout HD HD Fury it's not really like GT5, but if you don't like racing games in general no. It has weapons and eliminator mode... though the online multiplayer is pretty dead :-/

The top two are easily my favorite 2 ps3 exclusives

then
Valkyria Chronicles
MGS4 (not my favorite metal gear, but good nonethe less)
Uncharted's Good but I'd say rent it... especially the first one.
Little Big Planet

Are some other good ones

wow what a great deal , i'll buy it from you for 60 bucks :D

i recommond little big planet, uncharted 2 ( it is a fantastic game , get the game of the year edition it will come out  oct 12th), Heavy rain, god of war 3, modnation racer

I say:

Uncharted: Drake's Fortune (I thought the single player in Uncharted: DF was just as good as the one in Uncharted 2. You really want to play this game before the second to get to know the character so that you can enjoy U2 as much as possible!)

Uncharted 2: Among Thieves (No brainer)

inFamous (A lot of fun and you need to get ready for the sequel which is shaping up to be amazing. Don't get attached to the main character though!)

Buzz! Quiz TV or Quiz World (Really I think you can find it for 20$ and it's the most fun you'll have with friends)

Heavy Rain (Just so good. But you have to be ready for something different. Isn't that exciting?!)

Those are must have, especially since you can find most of them for cheap.

I finished playing Gow3 today. It was disgustingly amazing (if that makes any sense)

I was like: http://myfacewhen.com/260/ and http://myfacewhen.com/396/ when I saw the ending.