Ruth Handler Club children's television show, Mattel invested heavily in television advertising. The TV commercials for the Barbie doll paid off and Barbie rocketed Mattel and the Handlers to fame and fortune. Subsequently, they would add a boyfriend for Barbie named Ken, after the Handlers' son, and many other "friends and family" to Barbie's world. Handler was diagnosed with breast cancer in 1970. She had a modified radical mastectomy, which was often used at the time to combat the disease, and because of difficulties in finding a good breast prosthesis, she decided to make her own. Handler went on to found a
Chelsea Handler at the D.L.", "The Bernie Mac Show", "My Wife and Kids", and "The Practice". She was a regular commentator on E! and "Scarborough Country", as well as a correspondent on "The Tonight Show". She hosted the first episode of the reality TV show "On the Lot", but quit before the second episode aired, saying later that she left "because I smelled the disaster happening before it did." The show, produced by Steven Spielberg and Mark Burnett, was a competition for aspiring filmmakers vying for a chance at stardom. It lasted one season. Handler was replaced by former Robin & Company