I was worried about getting bored after beating SMG, but then I got MoHH:2. Playing that online has been more fun than anything on the Wii yet.
Of course, now that I have a PS3, I've been busy getting my ass kicked on UTIII.
Once SSBB is released, it will be back to the Wii...
My End of 2008 Hardware Predictions (console only):
Wii : 50 million
360: 28 million
PS3: 24 million
These predictions were made on January 3rd and won't be revised