Clarissa Explains It All is an American teen sitcom that aired on Nickelodeon. Created by Mitchell Kriegman, it aired for five seasons for a total of 65 episodes from March 23, 1991, to December 3, 1994, and then went into reruns. In the series, Clarissa Darling, who is played by Melissa Joan Hart, is a teen girl who addresses the audience directly to describe the things that are happening in her life, dealing with typical pre-adolescent concerns such … meer