Revealing mistake: When Kyle, Elizabeth and Robin are in the truck being chased by Mr. Chiang, in all the outside shots of the truck it is very easy to see that all three of them have been replaced by doubles. (00:09:05)
Revealing mistake: During the title sequence when Blair Tefkin's name comes up, Mike Donovan is riding a horse. A Visitor craft passes overhead and shoots at Donovan, but the laser appears out of nowhere instead of from the craft. (00:01:05)
Revealing mistake: When Robert and Julie are attacked by snakes outside the cave, notice that in the shots when you see the backs of Robert and Julie there are hardly any snakes on the ground (I counted one) compared to other shots. The shots of Robert's leg as he sweeps the snakes away are almost certainly of a snake handler instead of the actor. (00:37:45)
Revealing mistake: When Ham drives the van through the road barrier, the pieces fall off very easily considering how slowly he was travelling. In the next shot it is shown that the remaining barrier sections are both split vertically, revealing that they were sawed in the same direction beforehand, then the 'broken' pieces loosely affixed before the collision. (00:32:50)
Revealing mistake: When Donovan finds Diana's abandoned car in the desert, the outside shots of the chopper reveal that it is not Marc Singer at the controls. (00:36:40)
Revealing mistake: Extremely obvious stunt double for Kyle Bates when he escapes from the clutches of Mr Chiang and jumps off the roof. The stunt double looks absolutely nothing like the actor, and his face is very visible. (00:39:00)
The Sanction - S2-E5
Revealing mistake: When Klaus skids and falls off his motorbike it is obviously a stuntman as his body is much stouter than the actor's. (00:17:25)
Revealing mistake: The two Elizabeths are both played by the same actress, except in the shots where both are seen together. Continuity mistakes in the second Elizabeth's death scene reveal this, such as the second Elizabeth's head position changing, and the first Elizabeth's jacket being open/closed between shots. (00:42:30)
Revealing mistake: When the two wildcats throw hand grenades at the Visitors, the grenades are obviously fake because the explosions do not occur at the same place as where the grenades land. The detonations have obviously been located in a safe place away from the actors. (00:11:50)
Revealing mistake: When James' craft touches down outside the Sheriff's office, the wires suspending it from above are visible. (00:33:50)
Revealing mistake: An obvious stunt double replaces Marc Singer when he kicks the sheriff's shotgun out of his hand, and also when the truck drives into the lake. (00:05:10)
Revealing mistake: When John is holding the two mice, if you watch his left arm closely you can see his arm jerk beneath the table where he replaces the real mouse with an edible one. (00:20:50)
Revealing mistake: Several times during the Charles v Mike fight scene it is obvious that Charles has been replaced by a stunt double. (00:43:50)
Revealing mistake: When Diana blasts Lydia's shuttle, there is an explosion but the craft is still visible and intact for a brief second. (00:45:20)
Revealing mistake: When Mr. Chiang does a roundhouse kick against Kyle Bates, he has been replaced by a stuntman. Easiest way to tell is by his hairstyle. (00:37:40)
Revealing mistake: When Diana offers the ants to the two officers, she is gripping the handle differently between the far shots and the closeup. Needless to say in the far shots the officers are not eating real ants. (00:32:50)
Revealing mistake: When the building explodes at the end, the white limousine parked in front of it completely disappears instead of exploding. (00:45:20)
The Overlord - S2-E7
Revealing mistake: When the girl cuts her hand with the broken bottle, the glass never touches her hand. The blood looks really fake too.