Piper first opens her new club, P3, in this episode, which is around for the next six seasons. She names her club after herself, her sisters and also for the Power of Three.
The song playing at P3 before the girls kill the demon is also the alternate theme song for the show.
This episode marks the first use of Memory Dust.
The first musical guest at P3 was Dishwalla.
When Piper says "what are we Leo's witches?" it's a play on Charlie's Angels.