Revealing mistake: In the scene where Peter saves the child (Venus Lam) from the burning building, right after the jump over the floor opening, the child stands up to help Peter we can see she wears knee pads under her pajamas.
Revealing mistake: Just before entering Robertson's office after climbing the stairs, Spooner is behind Sonny with a flashlight. The light shines on Sonny's back and the door, but Sonny does not cast a shadow.
Revealing mistake: After Helen finds the hair on Bob's suit, she goes to him while he is in the car and says," Have a great trip. I love you, so much.", Bob backs the car out of the driveway. He backs out and turns, but you can see his hand on the top of the steering wheel doesn't move. (00:47:05)
Revealing mistake: When Thunderbird 3 lands in London, the jets do not burn the grass they land on.
Revealing mistake: Very near the end of the movie, when the NOAA director is viewed in the helicopter as it approaches NYC, the image is reversed, verified by the David Clark logo on his headset being reversed. There are two different shots of this just a few seconds apart, and they are both reversed.
Revealing mistake: Nearly at the end, the scientists find Alice's body at the waterfall, one of the men lifts up the cloth to take a look at her face. Her face is badly burned on one side and she is pronounced dead. However, take a look at the left side of her neck, you can see her either gulp or take in a quick breath of air. (01:19:05)
Revealing mistake: In the scene where Evan wakes up and notices that he has no arms, right when you see the stubs you can see a faint shadow moving next to his head and moving on the headboard. This shadow is the shadow of his hand before it was digitally removed. (00:29:15)
Revealing mistake: There is a wide shot of the ship were there is some equipment on the ice and some people moving around. The ship itself and the equipment cast shadows. But none of the moving people cast any shadows at all. (00:14:25)
Revealing mistake: At the end of the movie, when the last "Graboid" appears, in one or two shots of him retracting back into the ground, you can tell the shots are reversed, as dirt is being sucked down in an unnatural way. It flies up and sort of "implodes" towards the creature. (01:23:50)
Revealing mistake: On each of Sky Captain's hangar doors, the windows are broken in the exact same places, indicating the same window rendering was simply duplicated to make the others. (00:16:45)
Revealing mistake: Robin Williams is working on Bannister's rememory, scanning newspaper articles. Under the first headline, "Bannister Eyes Future," the copy reads, "Whoever wrote these headlines had as much fun as I did setting them in type and formatting them into newspaper articles. But then, this sort of headline appears in the paper regularly, so maybe we all just want to have fun. Fun: such a precious commodity these days."
Revealing mistake: When the man is melting after being covered in acid in the beginning, you can see a wire pulling the "melted skin" off his arm, at the bottom of the frame briefly. (00:04:00)
Revealing mistake: When they fix the door, in the last few frames we see while the door is still moving up, the gear stops spinning in the "rail".
Revealing mistake: Glenn Close's fillings and dental work are visible in a closeup when she laughs loudly during the new home inspection.
Revealing mistake: When John uses Scorpius as a shield and takes cover in front of him, as John fires at the Tregans behind Scorpius, there are round black devices attached to the back of Scorpius' suit that are there for the gunfire special effects, which suddenly appear then disappear after.