Hit ball by themselves in Tennis
Instead of throwing the ball in the normal way by A or jiggling the Wii-mote, flip the Wii-mote in the air and catch it. This requires some practice. Your character will hit the ball all by his or herself. This does not always happen, but with practice you can do this every time you hit the ball. Note: This has no practical use in the game and is only for the purpose of showing off.