Clint Howard is a character actor and the younger brother of filmmaker Ron Howard. He began his acting career at the age of three when he played the role of Leon on The Andy Griffith Show. He starred opposite the titular bear in the popular late-'60s CBS television series Gentle Ben, and has gone on to act in countless TV shows and films over the years. Among his credits are Star Trek in virtually all of its incarnations, Apollo 13, Seinfeld, Rock 'n' Roll High School, Arrested Development, The Waterboy, and many horror films.