Honestly, the only games I can think of are skate boarding, ice skating and roller blading which is pretty much like skiing and snowboarding. Maybe a dance title but I doubt the balance board can be jumped up and down upon, it'd prolly break. I know they have a boxing game on the wii fit so maybe another boxing game? or using the boxing mechanics, a shoot'm up game like they have in the aracades where you have to duck or go to the side to avoid bullets.
Ideas?