Description:Dancing with the Stars is set for what is shaping up to be one of its most competitive seasons as former contestants square off in an "All-Stars" spectacular. As everyone sizes up the competition, former Olympic gymnast Shawn Johnson is being tagged as one of the favorites to win, and as she told ET, she's ready for the challenge. "It makes me excited," Johnson said of being the frontrunner on the dancing competition show. "It motivates me. I'm a competitor, so I want to live up to the hype."