Revealing mistake: Any time a laser is fired in the show, there are no scorch marks on the walls where they hit.
School Days - S1-E3
Revealing mistake: When Max is being attacked with throwing knives, one is thrown into the closet door. Watch closely; the wire used to guide the knife is visible.
The Spy Who Met Himself - S3-E1
Revealing mistake: When the fake Chief calls Max over to the car, the driver is meant to be a double of Smart, but the driver is not Don Adams.
The Spy Who Met Himself - S3-E1
Revealing mistake: When Max is thrown in the dungeon, the man being dragged down the steps is not Don Adams.
The Spy Who Met Himself - S3-E1
Revealing mistake: In a few shots of the dungeon scene, both Maxes are shown. The one with his back to the camera has a different-shaped head to Don Adams, revealing him as a double.
The Spy Who Met Himself - S3-E1
Revealing mistake: Siegfried shoots his two thugs, but neither one has a bullet hole in their jackets when they get shot.
Viva Smart - S3-E2
Revealing mistake: Several times during the prison escape scene, the stone wall visibly wobbles.
Viva Smart - S3-E2
Revealing mistake: When Max is cutting through the wall with his laser pen, the wall is obviously pre-cut. You can see the joins.
Viva Smart - S3-E2
Revealing mistake: The drawers in Max's hotel room have no bottom part in them, but Max passes right between the two drawers when he straightens up, so they have no inside-facing part either.
Viva Smart - S3-E2
Revealing mistake: The juggler accidentally drops the ball in his act, but if you look at the final part of his performance, he deliberately holds one of the balls in his hands so he can miss the final one.
Revealing mistake: Vogel gives the address of Mrs Farris to Smart, but in the close-up shot, the paper has no ink on it. It's blank.
Revealing mistake: In one shot of the graveyard fight, Max is about to hit Mondebello, but when Max is bringing the shovel towards the camera, he visibly slows it down so it doesn't hit the camera.
Maxwell Smart, Private Eye - S3-E5
Revealing mistake: When Max and Trinka jump into the taxi at the start, the cab is in park position for the entire chase scene.
Revealing mistake: When Max, the Chief and 99 are going through the wreckage, Max picks up solid wood that's obviously polystyrene.
Revealing mistake: The lift for going in and out of the KAOS base is meant to be sturdy metal, but it wobbles like a prop when the KAOS agent drives off it.
When Good Fellows Get Together - S3-E8
Revealing mistake: In the final scene when Hymie is fighting Groppo, Hymie is a blatant stunt double in several shots, evidenced by the different shaped head of the double.
That Old Gang of Mine - S3-E10
Revealing mistake: When Max is scaling the wall into the palace, in one shot he is a visible stunt double.
Revealing mistake: At the start, when Max falls off his police motor cycle, he is obviously a stunt double.
Revealing mistake: When the Prime Minister's aide falls out of the car, he is a dummy.
Revealing mistake: During the fight scene in the gymnasium, Max is a blatant stunt double in some shots.
