Hooray! Activision's weekend investor webcast spurted that Spider-Man, Shrek, Transformers and Guitar Hero are all coming to the Wii. While nobody cares about the first three, we all care about Guitar Hero.
Nobody knows if the guitar controllers will be wireless or wired, whether they'll use tilt-sensors to position your character onscreen or what the price will be, but I think this is something we can all get mildly excited about once we're finished with the soon-to-be-upon-us Xbox 360 version.