M*A*S*H (1972) - 116 mistakes in entire show
starring Alan Alda, David Ogden Stiers, Loretta Swit, McLean Stevenson, Mike Farrell, Wayne Rogers
Across whole show
Deliberate "mistake": These errors I assume were caused by the show running 3 times longer than the real war. Col. Potter arrived at MASH in September 1952 a year before the war ended, then a few months passed by Margaret got engaged for 8 months, then Frank Burns left and Charles took his place. In this time the war would have ended. In the final episode Margaret mentions Charles has been there for 2 years. Which means he would have arrived in 1951 a year before Trapper and Henry left and Col. Potter arrived. It's a lot to take in.
M*A*S*H - The Pilot (series 1)
Continuity: When Hawkeye and Trapper are arrested by Hammond at the party there is a large crowd of people behind the General and Henry. When we cut to the shot of Margaret and Frank approaching, there is no-one in sight. (Timecode)
Continuity: In the pilot episode when Hawkeye and Trapper are going to send Ho Jon to the states to go to medical school, Hawkeye says Ho Jon can stay with his parents, but throughout the rest of the series Hawkeye's father is a widower. (Timecode)
Requiem for a Lightweight (series 1)
Continuity: In the first shot of Trapper running behind the jeep, he has a large patch of sweat on his chest. For the rest of the scene it is dry. (Timecode)
Henry, Please Come Home (series 1)
Continuity: As Henry is receiving his medal, Hawkeye walks up and stands close behind a man who is standing up and two women who are sitting down. The camera angle switches to show Hawkeye talking to Trapper and now they are standing behind two standing women. (Timecode)
Germ Warfare (series 1)
Continuity: Radar hangs the hammer on the "Out of Order" sign and it is covering the 'of'. When he and Frank walk away the hammer has moved and is covering the 't' (Timecode)
Dear Dad (series 1)
Continuity: When you see the shadow of the helicopter on the ground, there is no shadow of Hawkeye who is supposedly standing in the door getting ready to be lowered to the ground. (Timecode)
Edwina (series 1)
Continuity: As Hawkeye and Eddie are going to sit down for lunch, on the table is ketchup, a bowl, pepper and salt. The shot switches to them sat down and the order is now bowl, ketchup, salt and pepper. (Timecode)
The Ringbanger (series 1)
Continuity: When Radar is slipping the glass of milk into Buzz's tent, we see the outside of the tent and there are no windows. From the inside, the milk is placed on a table that is right under a window. (Timecode)
Continuity: When Frank is trying to examine the Colonel, in some shots Buzz's robe is open and in others it is tied at the waist. (Timecode)