We got Smarty Pants, and that's pretty good. My fiance loves trivia. We tried Brain Academy Wii Degree or whatever... and that wasnt' bad, but we weren't that into the whole abstract thinking thing.
Anybody know of good games for a couple? We like hockey, how is that Kidz Ice Hockey thingy? How about that Cranium-ish game? (Kaboozoki or something)