Always loved the concept of a game similar to the classic "rock, paper, scissors", so here is my take:
"Domination"
Three prizes are shown behind Door #2. On a game board next to the contestant, it is explained that the least expensive prize is represented by the Hurdler ($). The middle priced prize is represented by Yodely Guy ($$). The most expensive prize is represented by the Rat Race rat ($$$). It doesn't necessarily have to be these three symbols, but I wouldn't want them to use real people. Also explained is the following rule set:
Yodely Guy beats The Hurdler
The Hurdler beats The Rat
The Rat beats Yodely Guy
The contestant chooses any one of the three prizes that they would like. The associate symbol lights up on a display behind the prize. The contestant must then choose the correct prize that will allow them to win depending on the rules of the game. The prices and the correct symbols are shown on the displays once the game is completed.
The game itself is very simple, but would be very jazzed up to fit the theme. I would imagine the set would possibly be designed like an arena/wrestling match.
Thoughts?