Episode 1 of "Sabrina, the teenage witch"
s01e01 Pilot

Sabrina can't believe her bad luck: not only is she starting out in a new school the day after her 16th birthday, but her aunts inform her that she is now a full-fledged witch with newly awakened magical powers that she must learn to control. At first she thinks they are just trying to take her mind off starting school, but after she reanimates the frog she is supposed to dissect, Sabrina begins to have second thoughts - especially when her aunts present her with a book which contains an animated picture of her father, and reveal that her cat, Salem, can talk. Her first hesitant attempts at magic backfire when she is taunted into losing her temper with a snotty schoolmate named Libby Chessler and turns her into a pineapple, she must then appeal to the Council of Witches for permission to turn time back and run the disastrous day over again. She is refused, but Aunt Hilda - who used to date Drell, the head of the Council - marches off to intervene, and Sabrina finds herself re-living the day, this time acing a history test, making a friendly date with shy hunk Harvey Kinkle, and harmlessly deflecting Libby's malice. Being a teenage witch might not be so bad after all.