On the screen with the 'Game Start' message, press: C, A, LEFT, RIGHT, B. If it worked you'll hear a voice say 'Nice!' - then press start for the level select screen.
View Animations
Press START on the title screen to show 'Game Start'. Highlight 'Options' and press C, A, LEFT, RIGHT, B. Press START again and a screen will appear allowing you to view all of the game's animations.