Different paddle in Laser Hockey
To play with a round-shaped paddle, press [A] and [B] at the same time before a game round starts.
Get platinum medals
After you play all 9 games, you are encourage to go back and earn gold medals for all of them. There are in fact platinum medals that be be obtained if you play well enough.
Billiards platinum medal - Earn 65 points or more
Find Mii platinum medal - Get to 100th stage
Fishing platinum medal - Score over 2,500 points
Laser Hockey platinum medal - Score at least 16 goals and Win the match
Pose Mii platinum medal - Earn over 1,000 points
Shooting Mange platinum medal - Earn over 600 points
Table Tennis platinum medal - Return the ball over 200 times without missing
Wii Play: Motion Game Credits
Hold [B] while on the title screen for about 5 seconds. Then grab and hold the ball with the [B] button to rotate it around until you see the words STAFF CREDITS on the back of the ball. Wait a couple seconds and then the credits go by.