What games have you completed 100%?

[BumblebeeCody]

Xbox 360 only (1000G (Some with)DLC)):

Spoiler (Click to View)

FEZ, Skullgirls, Portal, X-blades, Burnout Revenge, Daytona USA, Devil May Cry 4, Guitar Hero 3, Street Fighter 4, Street Fighter x Tekken, Ninja Gaiden 2, Super Street Fighter 4, Castlevania: LOS, Burnout Paradise, L4D2, L4D, Orange Box, Final Fantasy XIII, Bionic Commano, Borderlands, Deadly Premonition, Afros Samurai, Earth Defence Force, Split/second, Resident Evil 5, Vanquish, Sonic Generations, Dead Space 2, Alice:Madness Returns, Marvel vs Capcom 3, Brink, CoD:WaW, Tekken 6, Silent Hill Homecoming, Guitar Hero 2, Final Fantasy XIII-2, Dead Island, RE4 HD, Beautiful Katamari, Bioshock, CoD: MW2, Ear Lead, Dantes Inferno, CoD: MW, Shadows of the Damned, Mad Tracks, Outrun Online Arcade, Splosion man, Scott Pilgrim, Bloody Good Time, Marvel vs Capcom 2, Doom, Crazy Taxi, Sonic 2, Duke Nukem 3D, Castelvania: SoTN, Street Fighter 3: 3sOE, Doom 2, Crystal Defenders, Doritos Crash Course, Sonic 1, Streets of Rage, Sega Rally, Castlevania: HoD, Dead Space Ignition, Bastion, Sonic and Knuckles, portal, Limbo, Dead Rising 2: Case West, Shadow Complex, South Park: Tower Defence, Sonic 3, X-men Arcade, Zombie Apocalypse, Comic Zone, Banjo-tooie, Battlefield 1943, Dead Rising 2: Case Zero, 3on3 NHL, Golden Axe, Harms Way, AfterBurner, SF2: HD Remix, Dash of Destruction.

PS3
Uncharted and Demons Souls.....meh

All previous generations like NES, SNES, PS1, PS2, Gameboy, N64 etc I have no idea. No real way of measuring it. I guess games like SSBMelee/Pokemon you have nothing left to unlock then you're done. Zelda I usually go by getting all heart containers (because that usually means completing all tasks in the game).