What else should I check out for the PS3?

Others have mentioned the Ico/Shadow of the Colossus HD collection. This, more than anything else, I would recommend.

The God of War Games are good, if you can stomach some over-the-top gore and a touch of chauvinism. I have not yet played the newest one, Ascension, but I played everything else up to God of War 3 and always enjoyed them. There's not really that much to the Kratos character, but I find him compelling somehow. He's like rage incarnate. And the Greek mythology angle is pretty fun.

Honestly, those are the only PS3 exclusives I've played. The only other game I've used that system for is Just Cause 2, which I do like, but it isn't exclusive.

Journey. LOL jk.

MGS4, Heavy Rain, Demon's Souls.

Looking forward to Beyond Two Souls.

I loved Dark Souls. I know it's not a direct sequel because they didn't retain the rights, so it's more of a spiritual successor. Is Demon's Souls different/interesting enough to give that a go too?

(I've never even touched a PS3, having only had Xboxen)

Brian Reagan, nice :)

I've never owned a ps3, though here are some titles that I have wanted to check out:

Last of Us
Journey
Kingdom Hearts 1.5 remix
Uncharted Trilogy
God of War
inFamous

MGS4, Heavy Rain, Demon's Souls.

Looking forward to Beyond Two Souls.

Metal Gear Solid: The Legacy Collection
Tokyo Jungle
Valkyria Chronicles
LittleBigPlanet
Hatsune Miku: Project Diva F
Kingdom Hearts HD 1.5 Remix
Final Fantasy X/X-2 HD Remaster
The Ico and Shadow of the Colossus Collection
Okami HD
Journey
Flow
Siren: Blood Curse
Tales of Xillia
Heavy Rain
Infamous
Twisted Metal
The Sly Collection
Jak and Daxter Collection
Ratchet & Clank Collection

What are some of the best PS3 exclusives I should check out?

I tried Uncharted 3 and didn't like it. I know, I should have started with the first one, but he doesn't have it, so I used what I had. It seemed very fun, potentially, but the controls were terrible in my opinion. Drake didn't want to go where I was pointing him at all, and the aiming while shooting was some of the worst I've ever seen.

That being said, I've already played through The Last of Us (Working on Survivor now!), and it was one of the best gaming experiences I've ever had.

I'm looking at possibly picking up Ni No Kuni; it looks pretty interesting.

What else should I check out for the PS3?