ABC News "Nightline" Anchor Cynthia McFadden sits down with mega star Cher for a rare in-depth interview. The star discusses her new movie, "Burlesque," her co-star Christina Aguilera, dating and if there is a man in her life, and whether reports that she's worth more than $600 million dollars are true. She also gives her first extended interview about Chaz, her son who has undergone gender reassignment surgery.
