It's the interview many have been waiting for. (Promo video for Oprah Winfrey interview with Lance Armstrong)

The cyclist is expected to confess to using performance enhancing drugs.

SOUNDBITE: Media Mogul Oprah Winfrey saying:

"I would say he did not come clean in the manner I expected. It was surprising to me. I would say that for myself, my team, all of us in the room, we were mesmerized and riveted by some of his answers."

Armstrong has always denied doping but this will be first time he addresses the issue since being stripped of his seven Tour De France titles last year.

SOUNDBITE:Media Mogul Oprah Winfrey saying:

"I think the most important questions and the answers people around the world had been waiting to hear were answered and certainly answered. I can only say I was satisfied by the answers."

A cancer survivor who went on to win cycling top prize --- Armstrong's story made him a hero far beyond the world of professional sports. In the wake of a USAnti-doping Agency report last year which described as the ringleader of a highly sophisticated doping ring, the once revered cyclist has become a cautionary tale about the extent athletes will go to, in order to win.

His interview will air on Winfrey's OWN network on Thursday.