Along similar lines, Pick A Pair, IMO, lost its appeal when the ferris wheel set was scrapped for a less than stellar setup it is today. I know the Ferris Wheel was a little slow, and you couldn't see every product at once, but it was still pretty cool.
Here's how I think Penny Ante could work, and the setup would still be cool.
Make the Penny Ante game look like some sort of vending machine. Each side of the machine has 4 prices. Bob asks the player the price, and hits the button. If it's wrong, the player must put a penny into the coin slot to try again. If it's right, perhaps some cool lighting effect would appear on the machine.