Clarissa Explains It All is an American situation comedy television series from Nickelodeon starring Melissa Joan Hart. It was created by Mitchell Kriegman, encompassing 65 episodes shown during five seasons. The teen sitcom ran from March 23, 1991, to October 1, 1994, and then went into reruns. In the series, Clarissa Darling, a teen girl, breaks the fourth wall and describes the things that are happening in her life (dealing with typical preadolescent concerns such as school, boys, pimples and an annoying little brother) to her television audience. It was originally rated TV-Y and was later changed to TV-Y7 in later reruns. Reruns of the show will return to TeenNick in the fall 2011.