It is best to be second in curling. The CPU will always try to hit where you can not get in the middle. Keep knocking the CPU's stones out until the last curl, then go for the middle.
Snowboarding giant slalom
Edge by using A immediately after clearing the flag.
Alpine skiing giant slalom
Stay as tight as you can when you turn to the next gate. If you hit the flag, keep staying tight to increase your speed.
Speed skating stamina
If your stamina is low, take a break during the turns, and not the straightaway.
Halfpipe gold medal
Execute a combination of F Alley Oop, and Alley Oop during the Halfpipe competition.
During the Aerials, press B as soon as you hit the ground and keep the button held until fully landed.
Control CPU curling
Press A or B after the CPU has thrown the stone.
Faster curling event
Press Z after your character or the CPU has thrown the stone.
Select any event and country. Leave the name blank and press Start.
Special medal sequence
Win a medal in all events. Press Up(2), Down(2), Left, Right, Left, Right, B, A at the awards screen to view the first sequence. Press Up(2), Down(2), L, R, L, R, B, A at the awards screen for the second sequence.
Ski upside down
Select Olympic mode and the Freestyle Aerials event. Choose any trick, and down press any buttons while moving downhill. After leaving the ramp, rapidly tap B. The skier will land and jump forward on his head and ski in that position.