Spec me some must have games please :)

[Streeteh]

OK this is a spec me a game thread of epic proportions, any must have game can be suggested as long as it's for either the PS2,3, xbox 360 or PC. Keep in mind i'm after must have games! Ideally i'd also like to avoid games i don't already have expensive peripherals for (so for example, guitar hero 2 is out of the question as i've already got two guitars for the PS3)

What i have so far:

PS2:
God of war 1, 2
Ico
Shadow of the Colossus
Final Fantasy X, X-2, XII
Metal Gear Solid 2,3
Zone of the Enders 1,2
Odin Sphere
Okami
Resident Evil 4

PS3:
Rock Band
Guitar Hero 3
Little Big Planet
Warhawk
Resistance 1,2
Killzone 2
Motorstorm 2
Ninja Gaiden Sigma
Valkyria Chronicles
Dead Space
Metal Gear Solid 4
Ratchet and Clank: Tools of Destruction
Buzz
Infamous
Street Fighter 4
Mirrors Edge

Xbox 360:
Halo 3
Lost Odyssey
Gears of War
Fable 2
Kameo
Castle Crashers

PC:
Call of Duty 4
Supreme Commander
Half Life 1,2
Team Fortress 2
Day of Defeat: Source
Counter Strike: Source
Braid
Mass Effect
Fallout 3
The Elder Scrolls Morrowind, Oblivion
Bioshock

What i will be getting as soon as i can:
Gears of War 2
Ninja Gaiden Sigma 2
Tales of Vesperia
The Secret of Monkey Island: Special Edition
Dead Rising
Forza 2
Resident Evil 5
The Darkness
Crackdown