Revealing mistake: Throughout the film, the base station radio is not connected to an antenna. In many lengthy shots of the back of the radio we can see the power cord trailing out the back of the unit, but there is nothing plugged in to the antenna socket. This is especially annoying because base station radio problems are a key plot point.
Revealing mistake: After returning from the ocean planet, the crew has a long discussion on board their ship. Directly behind Cooper, the grey control panels are the pneumatic and pressurization control panels from a Lockheed L1011 airliner. (01:26:30)
Revealing mistake: When Thomas is running through the blades to rejoin the other runner, as they run into each other it is a CGI background. (01:08:50)
Revealing mistake: When Millie is being carried away, her head remains completely upright as though under her own control. If she was dead her head would hang back.
Revealing mistake: At the end the sides of the grave (which Jack just had dug by spade) are too perfect. Only an excavator could get such neat sides.
Revealing mistake: When the newscaster was filming Clinton giving a statement, the timer on the camera stayed at 0:00. The red "Rec" button, which supposedly was on, also looked fake. (00:10:35)