Melissa Joan Hart captured the hearts of teen boys and girls alike when she starred in the 1996 sitcom "Sabrina, the Teenage Witch." However, the now-47-year-old's magical, squeaky-clean image was tarnished when she posed half-naked for the cover of Maxim magazine in 1999 and she was accused of breaching her TV contract because of it. On top of that, she was nearly fired, too.