Continuity mistake: In George's memorial service, the extras are totally different in the shots from George's point of view to the shots from the back of the room. Look for the woman with brunette hair and orange overalls - she's there in the forward shots but missing in the reverses. The chairs, tables, props, costumes and character placements are all completely discontinuous. (00:12:15)
Continuity mistake: When Roseanne & Jackie talk about Arnie, they act like they haven't known him long. Jackie even states, "I don't know him." Yet, in episode "Why Jackie Becomes a Trucker," Jackie sleeps with Arnie. Roseanne says all the girls made a pact in high school that none of them would ever sleep with him.
Continuity mistake: Part 2: When Beck is visiting, Aaron Jastrow's wine glass refills itself several times between takes, even though he hasn't poured any more wine. (00:42:00)
Continuity mistake: When Miss White is writing Mrs. Heimer on the chalk board, the camera shows Kevin/the class, when the camera comes back to her, she has a different sweater, hairstyle, and her name is written in a different spot. I'm not sure if this is some kind of flash to when everyone comes back to school after summer, or an error.
Continuity mistake: Just before his twin brother appears at the window, Aulus Paulinus puts the statue he was looking at on his desk. While he is talking to his brother, the statue is gone. Then afterwards it suddenly returns to where it was.
Episode #1.1 - S1-E1
Continuity mistake: About halfway into the episode we see a woman walk into her house and answer the phone. The door behind her goes from open to closed on its own. (00:24:00)
The Killer - S1-E1
Continuity mistake: Jim's pupil and successor Copperfield is poisoned at the beginning of the episode. He screams, drawing the attention of the party guests. In the following POV shot, the guests are standing in entirely different spots in the room all of a sudden. (00:02:45)
Continuity mistake: "The Feverman": Before putting the chain around his neck, the doctor removes both his detachable collar and his black string tie. A few shots later, not only is the collar back, but he's now wearing a red ascot-style tie. Both collar and tie vanish again one shot later. (00:17:05)
Piratsy Under the Seas - S1-E1
Continuity mistake: When Jolly Roger hands the map to Dale, the map has either a dark brown border or not depending on the angle. (00:08:30)