Visible crew/equipment: Look closely when Clair gets up after saying to the kids "I'm glad we had this chat", you can see a tip of a camera on the right.
Visible crew/equipment: When Arthur goes to Dragoon to ask for help, when Dragoon runs out of the hut to turn back into Merlin, on the left hand side of the screen you can see a camera crew in modern clothes. [Fixed in Netflix version]. (00:23:00)
Suggested correction: I don't see any crew. I'm watching it on Netflix. Perhaps they fixed or perhaps they edited it out after realizing the mistake. But they aren't there anymore.
Even if Netflix corrected the mistake doesn't mean the mistake is now invalid if the mistake existed in the original BBC One airing. Netflix is known to change or edit programs they stream (such as replacing soundtrack songs).
Episode #2.6 - S2-E6
Visible crew/equipment: When The Demon Headmaster is talking about filling the world with his creations he says "there will be no children" and looks up to the ceiling. Reflected in his glasses is the top of the set complete with spotlights lighting the scene. (00:12:31)
Visible crew/equipment: At the start, while Bex and Ham are talking about Andi's real father, Andi comes downstairs to ask if she can have the disco ball, and in the overhead closeup of the ball we can see the reflection of the automated camera as it turns its lens toward the mirrored ball. (00:00:45)
Horse Sense - S2-E15
Visible crew/equipment: As Gene and Pat ride into the yard of Elaine Castle's ranch, the shadow of a crew member can be seen on Gene's horse Champion. (00:07:40)
The Losers - S1-E4
Visible crew/equipment: When Lodgepoole is telling Marshall about how the Bureau of Lost caused the Great Depression, someone's arm becomes visible in the upper left corner of the screen. (00:12:51)
Visible crew/equipment: In the live-action segment, several times when Mario and Luigi confront Mrs. Gammliss, the shadow of either a crew member or a piece of equipment is moving at the top of the screen. It is not Mario, Luigi, or the Ratagator's, as they are not moving, and it is not the passersby's, as the shadow is present even when they are not present. (00:17:38 - 00:18:45)
Visible crew/equipment: As Blue escapes from the fake Cloudbase, a puppeteer's arm can be seen throwing the puppet through the window.
Reba Eats and Pterri Runs - S3-E1
Visible crew/equipment: As Pterri comes around to Reba's left side, the puppeteer's hands can be seen behind her back for a moment.
Visible crew/equipment: After Tamera and her friends scream "Tia" and they leave, you can see a boom mic on top.
Visible crew/equipment: As Benson, Kraus, and Clayton go to leave President Voorhees, and as they cross the first area, if you watch the top of the screen, you briefly see the boom mic following them.
Gortimer vs. The Mobile of Misfortune - S1-E3
Visible crew/equipment: When Stanley is riding the kart in the race, the shadow of the camera equipment is briefly visible bottom right, just before the kart starts to fall apart.
Visible crew/equipment: After Howard heads to the TV show with the bird, when it cuts to Aunt Bee and Mike in the car the reflection of the boom pole and mic can be seen on the car's rear windshield, and we see it moving again when they all drive away.
Visible crew/equipment: After Graig returns Patty's math book, Cathy tries to use the pamphlet's rules as she follows Craig. When Craig thanks Cathy for helping him with Latin, the boom mic repeatedly pops up into view in the bottom right corner of the screen. (00:18:10)
Visible crew/equipment: There is a shot of the outside of the tavern (used in several chapters) where Zorro jumps towards Tornado. As the two walk away, a hand can be seen hiding behind the wall where Tornado was standing.
Visible crew/equipment: When Ferguson is talking about watching the National Geographic documentary a boom mic is visible.
Visible crew/equipment: When Angela and Tony are in the kitchen near the end, a boom mic is visible briefly near the top left of the frame, by Angela. (00:18:30)
The Great Treasure Hunt - S2-E19
Visible crew/equipment: When Morticia bounces the anchor on the floor, the wire used to make it bounce is visible when she puts it down.
The Accident - S1-E1
Visible crew/equipment: When Alex goes into the garage for the first time, a camera and camera operator can been seen reflected in the saw.
Fast Times at Dewey High - S2-E2
Visible crew/equipment: When Mike is talking about why he is excited about going back to school, a boom mic is visible in the left hand corner of the screen.