Can't forget the one where a demon uses the chance to win a trip to Tahiti to trap them all in a diabolical game show, where if they lose, they forfeit their souls.
They win, of course, and the demon is preparing to flee, but Peter grabs him, and without even using his proton pack, just starts manhandling him.
"YOU PROMISED US A TRIP TO TAHITI! WE GAMBLED ON A TRIP TO TAHITI! WE WON YOUR STUPID GAME! AND NOW YOU'RE GONNA SEND US TO TAHITI, ALL EXPENSES PAID, OR I'M GONNA WRING YOUR CRUMMY NECK!"
And the demon is so terrified of Peter, he just teleports them all to Tahiti immediately (along with the consolation prize of three tons of deviled ham).