Games I've played lots of:
Killzone 2 (ungodly, I honestly spent about the same time playing Killzone 2 as I did when I was super active as guide :O)
Uncharted 1 (Beat it completely)
Uncharted 2 (Beat it once, then started to play a second time to get super hard mode and get all the treasures, haven't picked it up since)
Assassins Creed (Beat it, but didn't bother with all the flags)
Assassins Creed II (Completely finished it. Got all the flags, feathers, tombs, armors, everything)
Assassins Creed: Brotherhood (Beat it and still play it at times to get all the other stuff)
God of War Collection (GoW 1 &2 on the same disk for PS3) Beat it totally
God of War III (Haven't beaten it yet)
Bioshock (Beat it)
Bioshock 2 (Beat it)
Infamous (Beat it and got most of everything done, except that last fucking blast shard, 1 of 354 or something like that)
Infamous 2 (Beat it on good, not on evil yet)
Final Fantasy XIII (Beat it and working on all the side missions
, gotta get those ultimate weapons)
Deamon's Souls (Beat it 1 time through, played it mostly at a friends house though, so I don't have the save file)
Dark Souls (Haven't beaten it, postponing for a long long vacation to do that)
Portal 2 (Beat it completely, just replayed it recently AGAIN after beating Portal 1 AGAIN all in 2 nights)
Ico and Shadow of the Colossus (Beat it on PS2 but got it for ps3 to see the crazy upgrades in graphics and still surprised how the graphics were on a ps2)
Need for Speed Prostreet (Beat it and built a very nice collection of cars)
There are more of my ps3 collection but all of these games I bought and are still here... Kinda makes me wonder why I spend so much money........