The Simpsons: Bart vs. the World

Secret Message
Hold Select, then press Reset. Continue holding Select at the initial copyright screen and quickly press A, B, Up, Down, Left, Right, A, B (this must be entered within the first five seconds the screen is displayed). The names "CHRISTINE, ROBERT, SCOTT, VICTOR" will appear at the top of the screen. To return to the normal copyright screen, press A + B.

The same cheat is present in another Imagineer game, Barbie.