Backlash of the Hunter - S1-E1
Revealing mistake: The exterior shot of the house of the rich Miss Elias preceding Dr. Ruben Seelman's phone call, is a zoom on a static photography with a visible line on it. It is reused later in the episode (after Jim pulverizes his own picture in the phone book), with the exact same telling line. (00:30:20)
Backlash of the Hunter - S1-E1
Revealing mistake: When Jerry guns down the reverend, the person falling forward wears a remarkable grey wig - you can spot black hair on his neck area, even. (00:34:55)
Backlash of the Hunter - S1-E1
Revealing mistake: Jim Rockford rushes towards the shooting when Jerry just shot the priest; he takes a sharp turn following skidmarks from previous takes. (01:18:00)
Backlash of the Hunter - S1-E1
Revealing mistake: During the whole climactic duel between plane and car, despite the setting in the desertic outskirts of Vegas, aerial view show already from the beginning several tire tracks from previous takes. (01:30:00)
Revealing mistake: Rockford checks out of the publication featuring the bulletin article about the Greens headed for the Greek Islands. The camera lingers on it, and you can read it's all filler gibberish about investigations and such. (00:17:35)
Revealing mistake: During the car chase in the golf course, Rockford gets ahead of Muzzy Vinette and has to turn the car to block his path. You can see in the grass, in that precise spot, different marks from previous takes of the scene. Obviously not a maneuver golf carts perform, and right there. (00:43:40)
Revealing mistake: When the cars run past the water sprinkler, the curve has been already marked by several tire tracks. (00:44:25)
The Dark and Bloody Ground - S1-E3
Revealing mistake: Chased by the truck, Rockford passes a brown Chevy Malibu that was bottling him. At the wheel of the truck there's a stuntman with a 'stache and not the same actor in the close-ups. (00:17:00)
The Dark and Bloody Ground - S1-E3
Revealing mistake: In another attempt to his life, Rockford has to somehow stop his car when his brakes have been sabotaged. However, at the end of its run the brakes are activated, suddenly locking the back wheels, causing the car to stop, and not the slow-down determined by the dirt mound. (00:25:15)
The Dark and Bloody Ground - S1-E3
Revealing mistake: Rockford puts the newspaper snippet in front of her client. The poorly constructed prop has the first 2 paragraphs a perfect repeat of each other. (00:28:25)
The Countess - S1-E4
Revealing mistake: When the car falls off a cliff at the end, it's an entirely different looking model with different headlights (square vs round), and empty (at least nobody in the passenger seat for sure). (00:46:30)
The Countess - S1-E4
Revealing mistake: In the climax of the episode, the car goes off a cliff when Rockford steers abruptly. Definitely not your ordinary maneuver, but other people must have chosen to commit suicide in that spot, since there are previous tire marks of a sudden turn in that exact spot. (00:49:20)
Tall Woman in Red Wagon - S1-E6
Revealing mistake: Rockford and Sandra have conned the conductor into going back to Agent Stoner. An outside shot of the train shows the wagons with mirrored numbers. (00:34:05)
Tall Woman in Red Wagon - S1-E6
Revealing mistake: Harry Stoner is unconscious when Rockford and Sandra push him into the overhead couchette, but you can see his head raise independently from Rockford's sideways push shortly after he lands in it. (00:35:50)
Revealing mistake: Rockford is at the public phone with his client; during the scene, the same extras (guy with grey jacket and pink shirt, a nun and others) keep walking keep and forth in the lobby all the time. (00:02:30)
Revealing mistake: Torrance Beck and his men load Rockford on the car to dispose of him. They get ambushed, with 2 cars suddenly turning 90° blocking the road. Unexpected? Perhaps, but look at the asphalt; apparently it's a regular thing in that part of the road. There are already skidmarks reproducing the exact same movement. (00:33:30)
Revealing mistake: Marilyn scribbles all over the picture drawing facial hair with a marker. As Rockford retrieves it, you can see that the prop is still of an immaculate photo. (00:42:10)
Revealing mistake: During the opening set in Switzerland, all the cars have Swiss license plates from Lausanne with the Vaud canton emblem, but every single one of them has them mounted on license plate holders of the wrong size, showing that they all are cars from a different region/market.
Revealing mistake: When Willie catches Rockford and Rocky trespassing on the posted land, as Willie says, "No season on varmints," this closeup and the following closeup are flipped shots, note his shirt buttons. (00:14:10)