When I though of this topic, I though I'd be able to say I've completed most of my games, then I took a closer look, and realised that I've never seen the end sequence on more than 20 of my games.
So how many games do you own, but never made it to the end? I'm not counting completing the game put not finding all the heart pieces / dog tags, etc. If you got to the end sequence you completed the game.