Gourmet Night (a.k.a. Gourmet's Paradise) - S1-E5
Revealing mistake: When the Colonel first meets Basil, the same shot is used twice of the Colonel twitching.
Revealing mistake: When Freeth, Carter and Regan raid the flat, Freeth breaks the door down - the door starts to fall before Freeth hits it.
Revealing mistake: The waterfront set always features a blue, cloud-dotted sky, even when the streets are wet from supposed rain. And the clouds are static, never moving or changing, betraying the fact that they're part of a backdrop.
Adam Driver/Chris Stapleton - S41-E10
Revealing mistake: Star Wars Undercover Boss: Starkiller Base: After Tim insults Kylo Ren as being fat, 'Matt' gets angry and Force chokes him before throwing him across the room into the vending machine. In the wide shot, you can see the rip line tied to Tim's back that pulls him into the vending machine. (00:03:50)