The wii, and most of its games.
It can't even make my "backup" console, (it was recently my ps3, but its too expensive to get games for both 360 AND PS3, so the old Xbox is my "backup" console now, (especially as Microsoft fails at backwards compatibility)).
The only game I ever truly loved on it was Super Mario Galaxy.
Brawl was decent though!
I would sell my wii, but I will hold out, as some games might eventually come out that are great, (and as a golden rule: I NEVER SELL CONSOLES! I always regret it in the end!).
EDIT: Also Little Big Planet, which I would've played much longer if they had switches the emotions on the dpad around with the movement on the analogue stick.
(So many freakin' times I would accidentally switch layers and die due to the controls, which are soo dodgy. Don't even get me started on that fiddly level editor! >:/ )