More money
Press [L], [R], [L]x3, [R]x2,
[C-Down], [C-Up] after successfully answering a question.
Alternate host
Press [R]x2, [L], [R] at the options
screen. A buzzing sound will confirm correct code entry.
Hidden screen
After you play Final Jeopardy, a screen will appear
with three options. Choose the "Quit" option to view
the credits. Allow the credits to end and wait for Alex Trebek
to say "Let's do it again real soon". The screen will
fade to black. Allow the game to idle for several minutes, and
a screen featuring a cow and penguin will appear very briefly.