The Obligatory "Game's I've Beaten, Yo" List
Games I've beaten. Need I elaborate? Obviously, there are games out there that you really can't beat. Some of those I have counted (such as Animal Crossing or Mario Kart) because I feel I finished all of the available content that would normally constitute "beating" a game.
By the way, this list is very, very scattered across platforms and times. It's just as I think of them.