Billionaire media giant and philanthropist Oprah Winfrey is best known for hosting her own internationally popular talk show from 1986 to 2011. From there, she launched her own television network, OWN.

Actress Portia de Rossi dropped by "Ellen" to deliver a surprise 60th birthday gift to her wife: Announcement of the launch of the Ellen DeGeneres Campus of the Dian Fossey Gorilla Fund.

Wendy Williams is a radio DJ and TV talk show host known for her no-nonsense attitude and brash on-air personality.

American television journalist Katie Couric, formerly of 'Today,' signed a deal in 2006 to become the first woman to anchor 'CBS Evening News' alone.

Rosie O'Donnell is an actor, comedian and LGBT activist who has served as host of 'The Rosie O'Donnell Show' and 'The View.'

A former supermodel, Tyra Banks turned her runway success into a multimedia brand and worked at the helm of two successful TV series simultaneously, 'America's Next Top Model,' and 'The Tyra Banks Show.'

A tense on-air exchange between co-host Whoopi Goldberg and Jeanine Pirro on 'The View' reportedly turned nasty backstage. Pirro, a Fox News analyst, was on the show to discuss her book 'Liars, Leakers and Liberals: The Case Against the Anti-Trump Conspiracy.'

Famed television journalist Barbara Walters is best known as the 11-year star of the Today show, and for being the first female co-anchor of a network evening news program.

Journalist, television personality and author Joan Lunden is best known for being one of TV's most popular co-hosts, appearing on Good Morning America for nearly two decades.

Sara Gilbert is an actress best known for her role as Darlene Conner-Healy in the sitcom Roseanne and as the creator of the series The Talk.

Comedienne Joan Rivers is known for appearing on 'The Tonight Show Starring Johnny Carson,' creating a Grammy Award-nominated comedy album and launching a syndicated daytime talk show, among various other projects.

Kelly Ripa is the co-host of ABC's morning talk show 'Live with Kelly and Ryan.' Before becoming a talk show host, she appeared on the ABC daytime drama 'All My Children.'

Dr. Ruth Westheimer is one of the world's most recognized authorities on sex. She has delivered her advice on TV, radio and the web for decades and has written numerous books.

Sharon Osbourne is the wife of legendary rock star Ozzy Osbourne and a television personality who's been featured on several programs, including The Osbournes and The Talk.