PS3...which games are the best?

I'd recommend inFamous, Uncharted, Killzone, Demon's Souls, Vanquish and God of War 3 right off the bat, but instead of writing a long list you should use this tool to browse all reviewed PS3 games here

XCOM: Enemy Within

Demon's Souls and Dark Souls

GTA 5

Valkyria Chronicles

Uncharted trilogy

Batman: Arkham Aslyum & City

Just Cause 2

Deus Ex: Human Revolution

Metal Gear Rising

Splinter Cell: Blacklist

Wipeout HD

Comet Crash

Yakuza 3 & 4

Dozens more but those are worth checking out. 100-250 games is massive, I don't have 100 even counting PSN games after 7 years of ownership.

Infamous

Metal Gear Solid 4

Valkyria Chronicles

God of War 3

Uncharted trilogy

The Last of Us

Demon's Souls

Red Dead Redemption

Heavy Rain

Killzone 2 and 3

L.A. Noire

• Okami HD
• God of War series 1,2,3, and Ghost of Sparta
• Demon's Souls and Dark Souls 1 + Artorias of the Abyss dlc
• Ico and Shadow of the Colossus collection
• infamous collection/ 1 and 2

Bayonetta! It's easily my favourite game and I'm sorely tempted to get a Wii U just for the sequel. (Apparently the Xbox360 version runs much better than the PS3 one though.)