Halo on the Xbox stoel a week from my life...
I literally got in from Uni and played non stop... my girlfriend thankfully kept me fed to stop me starving...
a simillar thing happened with serious sam,
she said things had to stop when I was playing Sims on the Xbox. wandering into the bedroom in the middle of the night (about 3AM) to wake her up and ask her why the other sims didn't like my sim and wouldn't let them move in so that I could progress through the game...
double dash on the game cube also stole many a weekend but at least that was a two player...
same as four swords we both spent ages playing that as a two player.completing it in about two weeks or semi concerntraited play.