"Sesame Street" characters Elmo, Rosita and Cookie Monster help host the show; TV personality Jeff Leatham ("Flowers Uncut""); a survivor of "The Miracle on the Hudson."

Rapper 50 Cent discusses his new album and film; Natalie, Kendra, Flo and Kate from "The Bad Gilrs Club."

Authors Heidi Montag and Spencer Pratt discuss their new book, "How to Be Famous."

Dr. Drew Pinsky discusses sexual addiction and his new show, "Sex Rehab with Dr. Drew."

Teenagers who pressure themselves to be perfect; healthy holiday eating.

Tyra and writer Meghan McCain talk about fake hair, including hair extensions and weaves; social networking Web sites and identity protection.

Women who can't keep secrets; a man who uncovered a secret when he read his wife's diary.

Celebrating the cycle 13 finale of "America's Next Top Model"; viewers vote for their favorite top model contestant; the four finalists are reunited with their family members.

Tyra talks about weight discrimination.

Tyra speaks to several guests who have both male and female characteristics; former "America's Next Top Model' contestants wear gender-bending looks.