PENN JILLETTE and KYM JOHNSON are polishing their cha cha cha for the Monday, March 17 premiere of the next round of "Dancing with the Stars" — and ET is behind the scenes to get all the ballroom buzz.

Penn, who admits he has never seen a single episode of the dance competition, thinks it is better that way:

"When I did ‘Letterman,’ I had never seen it. When I did ‘Saturday Night Live,’ I had never seen it," says the magician, who works nights, and therefore doesn’t catch much on the tube. "I tend to be rather rebellious. If I know too much about a show, I might go in the other direction. I am doing the best job I can. I am the oldest, the fattest and the tallest. None of those things are good, but I have the best partner, so maybe that balances it out."