Excite Truck

This is a simple, ludicrously over the top racing game. The very straightforward controls are it's biggest draw (hold wiimote sideways, tilt to turn, 1 is brake, 2 accelerator and d-pad turbo boost). It combines this with silly tracks including powerups that can deform the terrain and a physics model that is... forgiving, shall we say (these 4 wheel drive trucks can jump any distance with no ill effects, for example).

Lots of fun.