Bob Barker is a retired TV game show host. Barker is credited with making CBS's The Price Is Right the longest-running daytime game show in the history of North American television, hosting the show from 1972 to 2007. Also an animal rights activist, Barker has supported groups like the Sea Shepherd Conservation Society and the United Activists for Animal Rights.
Professional skateboarder and stunt performer Bam Margera gained fame with the reality show Jackass. He has also hosted his own TV and radio shows, produced a video series, and appeared as an animated character in the Tony Hawk game franchise. He has directed films and also owns a music label.
3 Bill Nye
Bill Nye is an American mechanical engineer, television presenter, and science communicator. He is known for hosting the live-action science program Bill Nye the Science Guy. He is credited with inventing a hydraulic resonance suppressor tube, which is used on the Boeing 747 airplanes. He also helped develop MarsDial, a sundial that became part of the Mars Exploration Rover missions.
4 Bob Hope
British-born American comedian and TV personality, Steve-O, gained international fame with his performance stunts in the TV series Jackass. Following a nomadic childhood, he graduated from the Ringling Brothers and Barnum & Bailey Clown College and began his career as a clown. He eventually started appearing on TV shows and became popular.