Mario Party 8 video of 5 mini games + more
Flagpole – By rotating the wiimote you raise your flag up the pole
Soda Fountain – By shaking the wiimote you get your can to produce the most soda
Ball Tilt – Tilt the wiimote back and forth to drop colored balls into the correct container
Water Ski – Tilt the wiimote to hit ramps and collect items to win
Apple Shoot – Using the wiimote to aim, you have to hit the target more accurate than your competitors.
UPDATES: Added video showing someone using the wiimote with a lasso game: