Melissa Joan Hart
(Frank Ockenfels / The WB)
Hart spent five years playing the cynical title character in "Clarissa Explains it All" for the kids network. The role led to another long-running series of her own, The WB's "Sabrina, The Teenage Witch," and the movie "Drive Me Crazy." She's since laid low, appearing in a handful of projects, most recently the ABC Family TV movie "My Fake Fiance" and "Dancing with the Stars."
