I like the LITZ cheat. I set up a game for my non pinhead guest and you should see their reactions when they get it.
At first they are like the game is broke because of the delay (animation and light show), I tell them to wait a bit, and when it starts chucking balls at them after about the 3rd ball they are going holy crap!
I used it about 2 times myself, but quit the game after it ended. Just didn't feel like playing a full game.