38. A phaser changes to a communicator
William Shatner seemingly has some trouble when it comes to devices in the Star Trek: The Original Series episode “Devil in the Dark.” At one point, Captain Kirk can be seen clutching his phaser during a tense encounter with the Horta; however, in the next shot, the character appears to magically be holding a communicator instead.
37. Visible stunt doubles
A stunt double is supposed to do all the hard work without ever getting recognized for who they really are. But the two men who stand in for Quinn and Riker in the The Next Generation’s “Conspiracy” episode certainly can’t be described as inconspicuous. Yes, when the pair are featured prominently on screen for several seconds, it becomes obvious very quickly that they aren’t the actual actors.
36. There’s another Chekov
We understand why some actors would need a double for the more action-packed sequences. It’s perhaps more of a head-scratcher, though, to contemplate replacing Chekov when he’s meant to be simply sitting down on a chair. But that happened in the original series episode “Let That Be Your Last Battlefield,” where an entirely different person can be clearly seen impersonating the beloved character.