I've conjured a list of games that PS3 owners must have in order to fully enjoy their consoles. This is not a list of exclusives, because that would be stupid. It's in no specific order, just what I thought of first I suppose.

Heavenly Sword
This game is essentially just God of War with boobs, epileptic hair, combos, and no blood. Though not being quite as brutal as God of War, it is every bit as good. Definitely a good title to own if you own a PS3.

Metal Gear Solid 4
This game is easily one of the best games ever created in the history of gaming. It towers over its predecessors and reinvents stealth/action gameplay. Not for those of you who just want to run and gun, as it is extremely heavy on the cut scenes.

Killzone 2
This is what you get when you cross Halo and Gears of War. It is the only FPS game that I've ever played where the cover system works nearly flawlessly and the action is both brutal and strategic. You are not a super human, so you can't run ahead of the group and slaughter your enemies.

Uncharted: Drake's Fortune
A true work of art; the game is so beautiful that it almost seems 3D on an HDTV. It crosses gameplay elements of Gears of War and Tomb Raider and comes out with a very fun puzzle/action game that will last you for a very long time. The voice acting is phenominal as well.

Dynasty Warriors 6
Whether you own an XBox 360 or a PS3, you have to own this game. It has nearly perfected the art of mega awesome hack n' slash action. It's one of the only games in existence that I can find where the entire time you are smashing square and triangle throughout maybe 15 maps with 45 different characters and it still manages to be super mega ultra awesome.

----------------------------LAZY LINE--------------------------------
I'm lazy and I don't feel like writing any more descriptions. From here on I'm just going to list the games.

LittleBigPlanet
The Darkness
Grand Theft Auto IV
Tekken 5: Dark Resurrection
Saints Row 2
Gran Turismo 5 Prologue
Flower
Ninja Gaiden Sigma
Siren: Blood Curse
Resistance: Fall of Man
Resistance 2
SOCOM: Confrontation
Ratchet & Clank: Future (all titles)
The Club (just kidding, this game blows)