Bewitched was a popular TV show that originally ran from 1964 to 1972 that followed the witch Samantha Stephens and how she had to avoid using her magic because her husband didn't approve.
The show (in reruns) was Phoebe Halliwell's favorite show growing up, and she has said it is where she learned "how to be a wife." Cole Turner, however, had never heard of the show. When Phoebe puts on Grams' Ring, she doesn't realise it is cursed and Phoebe turns the greyish colour of black and white TV and starts acting like Samantha Stephens too. ("Lost and Bound")