Continuity mistake: When Park Eun-hee is talking into a video camera there are some on-screen icons for the camera: zoom, battery level, etc. Initially there are two guide lines on the zoom level bar. When the view changes then switches back a few seconds later, there is only one guide line.
The Citadel - S3-E18
Continuity mistake: When Ahsoka asks Master Plo if she can speak with him, her Padawan braid (the beaded chain hanging on the back of her head below her right horn) is missing. (00:04:05)
The Darkest Hour: Part Two - S4-E2
Revealing mistake: At the very beginning of the episode, as the knights are about to send Merlin to Camelot with Lancelot, the knights walk towards the camera. As they do, there's a patch of green screen the special effects department must have forgotten to remove between Sir Elyan and Sir Percival. (00:02:10)
Continuity mistake: There are four other nuts lying on the ground around the hole at the feet of the 790 Robot where Stanley had been trying to throw them into the hole. When talking with the prisoner transporter woman, he throws another nut at the hole and makes it in, and in the close up of the hole the nut that was the furthest to the right vanishes while the other three remain in the same spot. (00:11:40 - 00:13:00)
Visible crew/equipment: During the final battle between Duncan and Luther, you can see a crew member holding a boom microphone pole standing on the stack of hay bales in one of the shots. (00:44:10)
Six Forgotten Warriors Chapter 4: The Six Fight Again - S5-E5
Other mistake: The news footage of the elderly Six American Heroes being attacked by the Insidious Six is merely clips from the previous episode.
The Saint of Last Resorts - S1-E8
Continuity mistake: John throws some stones onto a table to investigate whatever took the baby. The angle changes and they're in a completely different arrangement.
Chûgoku kara kita aitsu! Chotto hen!! - S1-E1
Other mistake: When Ranma is battling Genma at the very beginning, she slides into the main road. Behind her is a vending machine for drinks, only, it's marked "DOLINK" (bad transliteration). (00:03:00)
Visible crew/equipment: You can see the camera in the backseat as they pull into the gas station.
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)
First Kiss - S1-E17
Visible crew/equipment: At the end of the episode when Harvey hops away, a boom mic is visible. (00:21:55)
Continuity mistake: After Quinn bumps his head, he touches the wound with his left hand and his watch is turned around so the face looking inward. In the very next shot, from a different angle, he resumes touching his head but the watch has turned around to the standard position.
Episode XXIX - Couple on a Train - S3-E3
Continuity mistake: When Josephine grabs Ezekiel by his poncho, she is wearing a black glove on her right arm, but when the scene cuts to Ezekiel when he says, "What business is it of yours?", the glove disappears, showing Josephine's arm bare, but in the next shot, she is wearing both gloves again. (00:08:40)
Rocko's Happy Sack / Flu-In-U-Enza - S1-E11
Continuity mistake: Rocko's Happy Sack: Rocko scans all of his groceries in the checkout lane. Then, when Filbert tells Rocko that his total is $150, the groceries have disappeared from the counter. They reappear when Rocko finishes shouting at Filbert, then disappear again in the next shot. (00:11:09)