Episode 10 of "Sabrina, the teenage witch"
s01e10 Sweet And Sour Victory
Title: Sweet And Sour Victory
Original Air Date: 11/29/1996 on ABC
Plot Outline:
Sabrina learns a hard lesson in witchcraft when she tries to make Harvey notice her by using her powers to become an instant kung-fu expert under Mr. Pool's astonished tutelage. She easily defeats the standing champion, but must face the disapproval of her aunts and the jeers of the (magically animated) trophy she won. Meanwhile, Aunt Hilda tries out for first violin in the local symphony the mortal way, but loses to her longtime rival Gustav.