Continuity mistake: When the helicopter plummets into the wedding terrace, its nose is either pointing the right side or the left, depending on the shot. No continuity at all.
Continuity mistake: When Johnny breaks the news to Ben about Reed and Sue leaving the group, as Alicia says, "You can't be mad at them for doing what makes them happy", in first shot, her arms are down, but in the next shot, she's holding her hand underneath her chin. (00:39:10)
Continuity mistake: During the battle in London, when Mr. Fantastic is holding Invisible, her hair moves wildly. A shot later, her hair is suddenly trapped under his arm and just a few locks move, though mildly. (01:21:20)
Continuity mistake: When the Silver Surfer passes by Egypt, a man with a turban has an old woman on the left. When the shot changes she's standing behind him.
Continuity mistake: In the airport, the woman with the pony tail by Torch having pictures taken is either next to him or away with a group of girls, depending on the shot.
Continuity mistake: When the helicopter is being stopped by Susan, the bridesmaid's hair moves wildly, yet when the chopper gets closer and is about to kill her, her flowers and hair barely move, despite being inches away from the tail rotors and rotor blades.
Continuity mistake: In the disco, when Thing, Johnny and Reed walk in, Reed and Johnny suddenly stand closer together between shots.
Continuity mistake: When Reed is in the plane and places the briefcase, the grip on the handle changes between shots.
Continuity mistake: When the movie starts, Reed and Susan are in an airport, with a couple of stewardesses walking behind them. When the shot changes, a young woman has replaced them, yet a shot later they reappear behind.
Continuity mistake: Thing, Johnny and Reed are at the disco. Johnny steps forward and Reed grabs him and says "We had a deal". A frame later Johnny is not two meters ahead but aligned with Reed.
Continuity mistake: As the Silver Surfer and the Human Torch fly down the face of the sloping Grace building, traffic on 42nd Street, below, can be seen moving to the right. When they hit the street level, traffic direction has reversed relative to the building. The number of lanes visibly reduces from 6 in the above view (2 parking lanes, 2 traffic lanes in each direction separated by a double yellow line) to 4 at the street-level view. This would also qualify under another category, as 42nd Street traffic is two-directional. The first, high angle shot from above correctly depicts the actual conditions on the street. (00:29:25)
Continuity mistake: Johnny chases the Surfer, who surfs down a building and shatters its windows and facade, yet none of the debris fall or even appear on the street in the next shots.
Answer: They're part of the mechanism that Galactus uses to extract the life-force from the planet.
Tailkinker ★