I'll do the middle ground and post the picks for the ones where I can actually make the choice.
List subject to change every time I make it:
NES: Super Mario Bros.
Playstation: Final Fantasy IX
Playstation 2: Shadow of the Colossus
Super Nintendo: The Legend of Zelda: A Link to the Past
Wii: Super Mario Galaxy 2
Gameboy Advance: Fire Emblem
DS: Castlevania: Order of Ecclesia
Playstation 3: God of War III
Xbox 360: Mass Effect 2