ER (1994)

Random Acts - S3-E20

Revealing mistake: When Dr. Greene is being attacked in the toilet, he is thrown into a supposedly brick wall. It bends and wobbles like a set wall would.

David Mercier

Random Acts - S3-E20

Continuity mistake: Chris Daw confronts Mark in the parking garage with the bill from the hospital for his brother's care. Mark folds up the bill, but as Chris says, "They don't understand", the bill is suddenly open in his hand again.

Random Acts - S3-E20

Continuity mistake: After Mark is beaten up, he topples out into the hall when Doug opens the bathroom door. The shot from the hall shows his body from the armpits up is in the hall, but from the shot from inside the bathroom, he is lying in the hall from the hip up. Nobody moved him in the meantime.