Malcolm in the Middle (2000)

Bowling - S2-E20

Continuity mistake: In the side of the story when Lois takes the boys, Malcolm has some kiddy bumpers put in to help him bowl. In the next scene when Reese is about to tell Beth the joke, you can see the lane which Malcolm was just at but there are no bumpers in the gutters. Then later when Malcolm stands up to Lois they are back in the gutters.

Professor Lazarus

Malcolm vs. Reese - S2-E21

Visible crew/equipment: When Reese throws the sheet off the bed a hand can be seen in the bottom right corner. (00:12:40)

Malcolm vs. Reese - S2-E21

Continuity mistake: When Francis gets pulled over, his window is open and closed between shots.

Carnival - S2-E23

Other mistake: Malcolm, Reese, Dewey and Stevie attempt to get on the Chamber of Horrors ride but are told it is closed and sent away. The next time we come back to them they are riding the ride.

Flashback - S2-E25

Visible crew/equipment: At the start of the episode Reese and Malcolm are teasing Dewey with the ball, after it rolls into the gutter the camera goes back to the three boys. To the left of the screen is the massive lighting equipment for the sunlight. (00:00:10)

Flashback - S2-E25

Visible crew/equipment: When Lois goes into labour with Malcolm, she runs outside taking Francis and Reese with her. When Francis says, "You're a liar, you're a liar," watch the back window of the car and you will see the camera and camera operator's reflection.