Continuity mistake: When Paige is trying to convince Piper and Phoebe that she needs to save Larry's soul, she has the Book of Shadows open to the page on vampires. In subsequent shots, the open page changes to two different demons; but Paige's hands are down by her sides the entire time, so she couldn't have flipped the pages over. (00:26:35)
Sense and Sense Ability - S5-E20
Continuity mistake: When Phoebe loses her hearing during her meeting at the newspaper, she holds her hand up to her ear while talking to Elise. In the next shot, her arm is suddenly resting on the tabletop, with no time for her to have moved it. (00:12:45)
Something Wicca This Way Comes - S1-E1
Continuity mistake: When Piper and Jeremy are in the elevator, he pulls a knife on her she freezes him. When the camera shows him from her p.o.v he has this really "snarling" looking face with his mouth open. But when the camera changes the shot from looking at them from outside the elevator, his face is completely different and his mouth is almost closed.
Revealing mistake: When Mark (as a ghost) and Piper leave the hotel after he asks for her and Phoebe's help, he bumps into the handrail as he walks down the steps.
Plot hole: Paige is able to use the enchantress' powers, but in "Pardon My Past", Phoebe can't use her past life's fire throwing power and Leo tells her it's because her past life misused it so she lost it. The enchantress misused her powers so Paige should not be able to use them.
Be Careful What You Witch For - S2-E22
Other mistake: Phoebe says to the genie "you've been stuck in the bottle for 200 years?" Later the genie says he will be an unwelcome house guest and not put the CD's back in their case. If he was in the bottle for 200 years how would he know of CD's?
Magic Hour - S3-E2
Visible crew/equipment: When Prue and Phoebe see Piper arrive home, a boom mic dips into the shot. (00:01:30)
Continuity mistake: When Prue, Piper, and Phoebe return from the future, Prue and Piper hug Phoebe in relief. In the following shot, Piper wraps her arm around Phoebe again. (00:39:20)
Character mistake: Paige goes undercover into the demonic market wearing a bright blue dress and blond wig, and none of the demons seem to notice she sticks out like a sore thumb.
Continuity mistake: When Phoebe tries talking to Emma about Belthazor, Emma's hands are folded in front of her, holding her sweater closed. In the following shot when Emma turns around, her arms are now down by her sides, with her sweater open. (00:31:10)
I've Got You Under My Skin - S1-E2
Continuity mistake: When Phoebe flirts with Alec at Quake, she rests her head in her hand. In the following shots between Alec and Phoebe, her hand moves back and forth from her face to the tabletop. (00:02:00)
A Paige from the Past - S4-E10
Other mistake: When Piper and Leo are talking to Phoebe about Phoebe's fear of accepting Cole's marriage proposal, Piper comments "...even though he could rip your throat out with his teeth", but the closed captions mistakenly read "with is teeth." (00:05:05)
Continuity mistake: The furniture used throughout the show regularly gets blown up or destroyed but then mysteriously re appears later on or in the next episode.
A Wrong Day's Journey Into Right - S6-E20
Revealing mistake: Right after Paige is orbing out, the camera is on Phoebe and on her right, you still see Paige's shoulder. And then it cuts to Paige orbing back in.
Factual error: During the ritual, we can see that the snake that is magically transformed into a man is a milk snake. But it's not poisonous, it's a colubrid. The creators apparently wanted to use its resemblance to a poisonous coral snake, which is an elapid. (00:02:35)
Continuity mistake: When Paige is at the bar with her newest charge we see the same extra walk by 3 times, going the same direction each time.
I've Got You Under My Skin - S1-E2
Revealing mistake: At the end of the episode when Phoebe and the other two are at the bar you can notice that Prue straw in her drink goes in and out of her drink a great deal.
Continuity mistake: When Prue lets Matthew out of the locket, the front view Prue has her right hand on her stomach, when the shot changes to the back view her hands are by her side, it does this multiple times.