Mark Hamill made his acting debut in an episode of the 1970 television series Headmaster, after which he made appearances in a number of sitcoms and dramas until his big screen debut in 1977. Here, starring as a Jedi padawan named Luke Skywalker in Star Wars: A New Hope, Hamill became a pop and nerd culture juggernaut. While he has reprised his role as Luke on a number of occasions, Hamill has also lent his talents and his voice to hundreds of characters, ranging from the ridiculously comedic to some of the most twisted villains in television history.