Bad =/= dissappointing.
Luigi's Mansion was dissapointing, I didn't enjoy that much and was let down, specifically as I was expecting a Mario 64ish good game (which is one of my favorite games)
And there are games which genre do not fit my taste (mario party, wii sports) but they do what they're supposed to do I think, I just don't enjoy that type of game.
But nothing I listed was a bad game per say. I can't think of any nintendo games that I've played that were bad as in awful. There probably is one, it's just I forgot about it since it was bad but not completely aweful like Bruce Lee on xbox :P.