I've been pretty bored with my Wii, except for an occasional game here or there. No More Heroes was/is excellent, Super Smash Bros was pretty good too. Other than that... I don't play my Wii much, though I do play the hell out of my 360. My teenaged son, never touches the Nintendo, but plays his 360 all the time (mainly because of some great games + XBox Live).
I originally bought the Wii for him, thinking he'd like it more than either a PS3 or 360, but I was wrong.. He loves his 360 and the Wii bascially became mine... which for the most part, collects dust. Played Wii-fit for a short time, but the fad of that wore off quickly too. I will dust it off for No More Heroes 2 though!!