Gold medal in all events:
Press Up, Down, Left, Right, Triangle, Circle, Square, Left, Left, Right, X, Down, Down, Up, Triangle, X at the title screen.

View ending sequence:
Press L1, R2, Circle, Square, Triangle at the options screen. A sound will confirm correct code entry. Select the "Olympics" option at the event selection screen. Enter TWY as a name and Russia as a country.