Continuity mistake: When Phoebe and Cupid visit the memory of Phoebe revealing she is a witch to Dex, past-Phoebe has her hands down by her sides, but then her left hand suddenly jumps to her purse strap. Not only that, but in the original episode ("Rewitched"), Phoebe's hand remained on her purse strap the entire time. (00:11:05)
Continuity mistake: Season 8, Episode 14, "12 Angry Zen": When Phoebe finds Paige at the manor after the demon/Zodiac fight, Paige rubs her neck with her left hand. In the next shot, it's suddenly her right hand on her neck. (00:28:55)