I've Got You Under My Skin - S1-E2
Visible crew/equipment: When Prue walks into the manor and sees Brittany in the foyer, we can see the boom pole moving at the top of the doorway leading to the dining room. (00:35:20)
Witch Wars - S6-E21
Visible crew/equipment: While the demons are watching Witch Wars at the bar, when the show's host, Corr, is holding an athame he tells viewers the winner will be awarded a serious power boost, then just as Corr says, "Since the shapeshifter..," in the shot of the demon bar patrons, we see the T-mark (it is not part of the Witch Wars show) taped to the floor under the table. That T-mark is visible again in at least three following shots. (00:23:35)
Crimes and Witch-Demeanors - S6-E19
Visible crew/equipment: After The Tribunal reverse the decision about Darryl he reappears at his desk and he hugs Sheila, then as the camera pans around to reveal The Cleaner standing in the doorway, we can see the white tape mark on the floor behind his feet. (00:39:00)
The Courtship of Wyatt's Father - S6-E16
Continuity mistake: When Leo and the sisters are in the alley with darklighters, Phoebe falls from the roof and her high-heeled boots become flat shoes. (00:14:40)
Continuity mistake: When Chris tells Phoebe that searching for Jinny at the dig site may be a trap Chris is wearing a zipper hoodie, but in the next overhead shot just as Chris sees the hole containing bones Chris has on what looks like a leather jacket, and then it's back to the zip hoodie. This is odd, because it's not until later after Leo heals Chris, that we even see Chris in the leather jacket. (00:03:10)
Continuity mistake: When Phoebe is told that Jason asked not to be disturbed she decides to go in anyway, and right before she enters Jason's office the lace-up on the back of Phoebe's top is very loosely tied so we see a lot of skin, but when she's inside Jason's office the lace-up is tied quite tightly so only a bit of skin is seen. (00:11:40)
Valhalley of the Dolls (1) - S6-E1
Continuity mistake: When Paige and Phoebe throw the potion at Darryl to borrow his soul, Darryl's physical body lies face-up with nothing on him, but in the closeup the necklace with Darryl's badge is lying neatly atop his chest. (00:36:15)
Valhalley of the Dolls (1) - S6-E1
Revealing mistake: When the sisters summon the Trok demon Phoebe is wearing a bikini top, and as the demon blasts them all backwards into the wall, Phoebe is wearing something around her waist for the stunt. (00:07:20)
Visible crew/equipment: After Leo leaves Piper alone at Darryl's party in the park, when it cuts to Elise and Phoebe at P3, we can see the two T-marks on the floor behind them when they walk over to the counter. (00:12:35)
Necromancing the Stone - S5-E21
Visible crew/equipment: After Phoebe tells Jason that she'll go with him to Hong Kong in the morning, when it cuts to Piper and Paige looking out of the attic window, the reflection of a crew member is visible in the window behind the candles. (00:33:40)
Continuity mistake: Phoebe is making her coffee and pours cream in. The next scene it's almost overflowing and black.
Brain Drain - S4-E7
Revealing mistake: When the Chameleon Demon changes from a lamp to a demon he throws Piper and Phoebe with Telekinesis but Piper looks to the right before he motions the toss. (00:03:05)
Womb Raider - S4-E21
Other mistake: Piper tells Page that her doctor told her she probably wouldn't be able to conceive because of scar tissue from blunt force trauma. But Leo has healed Piper, if there was scar tissue after Leo heals, then all 3 girls should be covered in scars.
Suggested correction: They are thrown around quite a bit before even finding out Leo is a whitelighter. Also, he doesn't heal them every time they get thrown or hit in the abdomen. In fact, we usually don't see him heal them at all if they're just thrown across the room or punched in the gut, unless there's a visible wound.
Other mistake: Grams says that if she died the girls would automatically get their powers; but they got their powers 6 months later and Phoebe had to read from the book of shadows first. Not really automatically.
Continuity mistake: In the season 2 finale the council has five members and yellow robes, in this episode they're now called the triad and there are 3 members in red robes (changed to black robes with inverted pentagrams in later seasons).
Continuity mistake: Near the end of the episode Piper is talking to her sisters in the parlor with her watch is on her left wrist and a bracelet on her right wrist. She goes upstairs to her room to cry and her bracelet and watch have switched places. (00:39:05 - 00:40:00)
Continuity mistake: When Phoebe first meets and talks to Nathan in the hospital, she has no ring on her right hand in shots showing her face, but in any shots from behind her she has a ring on. The ring appears and disappears between transitions during their conversation. (00:07:50)
The Bare Witch Project - S7-E2
Other mistake: At the end of the episode when Phoebe is on the horse making her lady Godiva speech her jeans show at her waist. When they pan out she is "naked." When she starts to ride away her skin tone underwear shows. They cut away to Paige and Piper and when they come back to Phoebe riding away the underwear is covered by the long blond hair. (00:41:05)
Other mistake: When The Angel of Death comes to Leo in the car Leo asks him "can I at least see my son again?" which is an odd way to ask that question given that he has two sons.
Hulkus Pocus - S8-E9
Other mistake: When Piper is explaining to Phoebe that they don't have enough time to save Billie, she lists all the things they need to do ending with "fix us and then fix Billie..." This doesn't make any sense, since when she's saying it there's nothing wrong with them to fix. It's only after she says this that they come up with the plan to infect themselves. (00:29:54)