Continuity mistake: When Scooby and Shaggy are at the "Hotus Dogus" stand in the Coliseum, you can see that Scooby has two flags in his left hand, but after a quick close-up of Scooby, we return to him and his flags have disappeared.
Witness for the Execution - S2-E15
Continuity mistake: When David and Maddie are debating whether or not to help Lawrence Everett, the towel David uses to wipe shaving cream off his face jumps around during the scene. It's around his neck, then in his hands, then on his shoulder, and back in his hands, etc. (00:15:40)
Continuity mistake: As Dave is leaning over the edge of the air boat with Rose behind him, he pulls a chunk of metal out of the water and places it on the edge of the boat on his left side. When he gets up from his lying position moments later, the metal is gone. Moments later again, with an overhead shot of the boat, we see what appears to be that piece of metal positioned at what would have been his right side, not his left. This is also where we see him step over the seat (twice!) in subsequent camera angles. (00:30:00)
Continuity mistake: When Howard sees his ex in the jacuzzi, his glass has a little bit of alcohol in it. When he drops it and it shatters, the glass is empty.
Continuity mistake: The fish that Harley uses to protect herself from the Joker changes shape and size every shot.
Testimony of Evil (Dead Men Don't Laugh) - S1-E6
Continuity mistake: At the start, the glass on the left is poisoned. The guy picks up the glass on the right, but still ends up dying.
Continuity mistake: When Mary talks to Bobby D at the crime scene, her hair moves back and forth over her left shoulder between shots throughout their conversation.
Polly Wants a Treasure - S1-E8
Continuity mistake: In the scene where Baloo and Kit walk through the Sea Duck's cargo area to try and find who they think is a stowaway, Baloo lifts a crate of fragile crystal glasses over his head. The crate rotates between shots, judging by its red "Fragile" stamp.
Continuity mistake: When Irina meets XIII on the river dock, she leaves her car, closes the driver side door and walks to XIII. Moments later, when XIII is shot, she runs back to her car, where the door is wide open.
Continuity mistake: Inspector Ressler is struck across the temple on his left side in the scene at the "bawdy house". He holds a hanky on that spot later and there are no visible marks to the right side (his right) of his face. Then, in the street scene afterwards and while looking at the Swedish Bakery he has marks on his right temple. Those marks are no longer there in later scenes such as Claxton's office. (00:41:20 - 00:42:30)
Continuity mistake: Kate and Donny are having a drink after they close the bar. She's alternately holding the bottle by its neck or much lower down. (00:24:00)
Continuity mistake: When Randi is in her tent working on her thesis, the computer is on. When something hits the tent, she almost drops her computer which now has a black screen, indicating that it is off. When the werewolf rips through the tent, the computer is now back on.
Continuity mistake: In episode 3 or 4, one of the characters is knocked out and lying on the floor in the Russian sub. He is on the 'left' side of the shot most times he is shown, but occasionally he's on the right.
Continuity mistake: When Theresa and Ben walk down the road leaving town, and run into the woods from the Sheriff, Theresa's roller suitcase falls over on its 'back'. A minute later, when Ethan catches up to them, the suitcase is on its 'front'. (00:36:30 - 00:37:30)
The Body in the Library - S1-E1
Continuity mistake: Joanna Lumley has long hair tied back while driving her car but much shorter hair subsequently.
Episode #2.3 - S2-E3
Continuity mistake: Jack and Georgina pull into parking spot next to another vehicle. In next shot, as they walk away from their Mercedes, there is no vehicle in the next spot with no time for it to have pulled out. (00:28:15)
Continuity mistake: In the scene in the courtroom towards the end where Alicia is talking to the security guard who is in the witness stand, he glances over at the jurors. When they cut back to the jurors a few seconds later, they are wearing different coloured shirts. (00:33:30)
Split Second to an Epitaph: Part 2 - S2-E3
Continuity mistake: When originally interviewed, Ironside holds up the police sketch. It is evident that it still is a bit rough as it has a line across the eyebrows. Later in the televised broadcast, the picture is completed, no roughness at all.
Episode #3.5 - S3-E6
Continuity mistake: Sidney is attending a pre-wedding dance in the camp he is visiting wearing a light colored shirt. When he leaves the dance floor to chat with other attendees, he is now wearing a green sweater over his shirt.