Here are my picks; let me know if you can think of anything else that I may like and that I should add to the list based on what you see here :D

Alan Wake 360

Alone in the Dark PS3

Darksiders: Wrath of War PS3

Data-Fly PS3

Dead Island 360

Dead Space PS3

Fable 2 360

Final Fantasy XIII PS3

Fracture PS3

Fumito Ueda (Shadow of the Colossus, ICO) reveals plans for his next project to appear on Sony's next-gen console. PS3

Gears of War 2 360

God of War III PS3

Heavy Rain (working title) PS3

Infamous PS3

Infinite Undiscovery 360

KillZone 2 PS3

The Last Remnant 360

Left 4 Dead 360

Mass Effect 2 (working title) 360

Motorstorm 2 PS3

MGS4 PS3

Ni-Oh PS3

Prototype PS3

Resident Evil 5 PS3

Resistance Fall of Man 2 PS3

Seikan PS3

Shin Megami Tensei (working title) PS3

Silent Hill V PS3

Siren: New Translation PS3

Star Ocean: The Last Hope 360

Star Wars: The Force Unleashed PS3

Tales of Vesperia 360

Too Human 360

Wet PS3

White Knight Story PS3

Lots of JRPGs comming to 360 :o