Depp, Jones, Aiken & Baiul Enjoying Comebacks

March 8 -- They were up, down, in, out, hot, cold. Rarely do celebrities get a second shot at the spotlight, but Oksana Baiul, Clay Aiken, Johnny Depp and Tom Jones are four very different celebrities who've traveled very different roads to reach the same destination. Their second act.

Your Average American — Idol: Clay Aiken

A year ago, Clay Aiken was virtually unkown when he gave an audition before the judges on last season's American Idol. He may have taken second place to Reuben Studdard on the show, but Aiken has since come out on top on the pop charts.

He sees his success as the American dream fulfilled.

"The American dream I guess is about normal people being successful, and I have been successful. I'm not the coolest person or the smartest person on the block. I just see myself as kind of average."

Watch a special edition of 20/20 Monday at 8 p.m.

Oksana Baiul: Back from the Brink

Oksana Baiul has had anything but an average life. She lives in America now but she's still a hero in her homeland for something she did a decade ago. At 16, Baiul skated to Olympic glory in 1994 with grace beyond her years. The event was among the most watched competitions of the games, spurred by the scandal on the American team. Nancy Kerrigan was hit on the leg by an acquaintance of teammate Tanya Harding, who was then barred from the competition.

Baiul, representing the Ukraine, skated flawlessly and won the gold medal. But off the ice, the gold medalist's life spun out of control. Beneath the celebrity photographs, friends say, was a lost and lonely little girl. She had no family, only her coaches to share her victory. Her father abandoned the family when Baiul was only 2, and her mother died three years before her Olympic victory.

Baiul said, "I was drinking a lot … one drink was too much for me, a hundred weren't enough." Then, on a January night in 1997, Baiul got a wake-up call. She lost control of her Mercedes, and drove off a Connecticut road at a speed police clocked at 100 miles per hour. She was charged with reckless and drunken driving, and required to enter a treatment program.

After she left rehab, she also left skating.