Joe Rogan became famous through comedy, martial arts, television and podcasting. He started as a stand-up comedian, performing with other prominent names, such as Sam Kinison, Tim Allen, and Billy Crystal. He was a commentator for the Ultimate Fighting Championship (UFC) and the Fear Factor game show in the 2000s. In 2009, he started The Joe Rogan Experience podcast, which is one of the most popular podcasts in the world today. He has also starred in several films and television shows, and is a successful author.