Yeah, but if a slightly overweight plumber is shown to outrun the worlds fastest hedgehog in the 100m sprint, a million fanboys will cry out for vengeance.
This actually has a lot of promise, just for being an olympic game on the Wii. Up to now, we've been stuck with the usual button-mash and timing stuff that started on the Amiga and never really changed, but the motion control could be great, if they get it right.
Come to think of it, a lot of the olympic events can be 'Mario'd' pretty well. Pirahna Plants replace hurdles, and so on.
Personally, I'm hoping that the hammer toss features bowser being thrown. We know Mario's good at that, at least.