Every time Richard White makes a radio call in his airplane, he starts with "November." All airplanes registered in the United States have an identification number that starts with N, which is November in the NATO alphabet. However, domestic pilots making radio calls never say the N because it's redundant.
During the news reports, the German banner "Fensterputzer halten an ihrem Lebemfest" (Window cleaners hold on for their lives) is spelt wrong. It should be "Fensterputzer halten an ihrem Leben fest." (This has been corrected to the latter phrase on the DVD/Blu-Ray Release)
When Superman flies Lois back to the roof of The Daily Planet building, the camera is facing away from the building. They spiral up and over the wall, and land with Superman on the right and Lois on the left. The next shot is a reverse angle with the camera facing toward the building, but Superman and Lois have switched places.
Clark returns to the Daily Planet and talks to Jimmy. Perry White calls Jimmy into his office. Jimmy tells Clark he has to go, but he'll be back to check on him in a sec. Jimmy turns toward Mr. White's office to walk away. In the next shot, Jimmy faces Clark again, then turns around again to walk away. Between shots, the extras in the background disappear.
After Superman "saves" Kitty from the near car collision, he picks her up from under her knees to fly her to a hospital. In the first cut, her skirt is up to her thigh, revealing the top of her stocking. In the next shot, her skirt is down to her knee.
When Superman lifts the broken half-a-boat out of the water, there is a fair amount of water trapped around the area surrounding the shut door.
However, when he pulls open the door, no water gushes into the doorway.
Brutus stops for a moment while walking to play the piano with Jason, so we can see the back of his head. You can see a bit of the tattoo on the back of his head, but you couldn't see any of it before.
When Luthor inserts the crystal into the kryptonite cylinder, it immediately starts growing. Since the crystals are described as needing water to grow (and the cylinder was obviously dry), the crystal shouldn't have reacted until after it was launched into the ocean.
Outside Lex's inherited villa his henchmen arrive in a van riddled with holes. The van used is a Ford Transit MK5 which was never produced in North America, the first Transit to be produced in North America was the MK6 in Mexico and the anticipated MK8 in the USA but production is not expected to begin until 2012.
Jimmy tells Clark that Luthor was freed from jail because Superman didn't appear when the Court of Appeals called him as a witness. Court of Appeals rulings are based on the facts in evidence from the previous trial, and nothing else. No new evidence or testimony is allowed.
Lois Lane would not yet be eligible for a Pulitzer prize. They are awarded each year for outstanding achievements in the previous calendar year. "Why the World Doesn't Need Superman" was published February 14, 2006. The movie takes place in September 2006 (evidenced by the date of the mock "Superman Is Dead" edition).
Immediately following the planting of the crystal/kryptonite seed, a cigar is dropped into the utility corridor and a natural gas line ruptures, the cigar ignites the natural gas. In reality a cigar burns at around 400°F while natural gas ignites at around 1000°F, therefore the cigar could not possibly have ignited the natural gas flooding the corridor.
When the Gatling gun begins to fire in slow motion, you see bullets coming out of the barrel. The ratio of tracer to non-tracer bullets in the movie is 1:2 and that is incorrect. The correct ratio should have been 1:4 which is standard worldwide in machine guns. No gun would have a 1:2 ratio because the tracer rounds wear out a barrel much more quickly than non-tracers so. Also, the Gatling gun has 6 barrels so with a 1:2 ratio, two barrels are always firing nothing but tracer rounds and would make the barrels wear unevenly.
In stopping the plane crash Superman's slowing down the plane pushing the nose of the plane is totally fake. The nose is just a shell covering equipment so it would have collapsed immediately to the actual frame behind the nose and that would show significant damage itself with the energy it would take to slow\stop the falling plane.
At the end of the film, Superman is seen high above the Earth, in fact at least a couple of thousand miles high. At this altitude there wouldn't be enough molecules to make his cape flap around in the manner shown.
Richard White's plane is a DeHavilland Beaver. It has a radial piston engine, and therefore would not have the three horizontal exhaust pipes shown on either side of the plane's cowling. Radial engines typically have one or two exhaust pipes on the bottom or side of the engine. The exhaust pipes shown are consistent with V-type in-line engines.
When the shuttle engine started, the airplane should have been destroyed. The wings of a commercial airplane are not designed to stand supersonic speed. However, the plane wouldn't immediately hit supersonic speeds. Plus, with the two crafts connected as they were, it's possible they *never* would've hit supersonic speeds, just speeds far in excess of design specs.
If Krypton was completely destroyed, how did Supes get one of the Kryptonian suits (like the elders') that he's wearing when he crashes in the field by his childhood home as well as what appears to be another star-shaped ship like the one he crashed to Earth in as an infant?
He probably got it from the Fortress of Solitude, or he built one using tech from the Fortress.
The EMP burst that triggers the docking malfunction of the NASA shuttle to the plane shuts down all technology, including engines, phones, etc. However, the microphone of the guide is still functioning perfectly.
During the bank robbery, the machine gunner connects the ammunition belt to the left side of the gun (to the viewer's right). When he fires on the police in the street, a few seconds of footage are flipped, and the feed belt is to the viewer's left.
The goof items below may give away important plot points.
Perry White prepares two versions of the front page of The Daily Planet for Friday September 29th, 2006. The camera zooms in on the one with the banner headline "SUPERMAN IS DEAD" and we see that the date is "Friday September, 29th 2006". Note the misplaced comma.
The time line of the movie does not match. When Lex Luthor holds up the newspaper showing Superman's return after the plane rescue, the date of the newspaper reads Thursday, September 28, 2006. The next day, when the TV sets of The Daily Planet show clips of Superman's rescues and stopped thefts since his return from space, there is footage of Superman stopping a robbery at a store and the date on the footage reads July 25th. About two days later, when Perry White has the two Superman headlines to decide from after Superman has lapsed into a coma, the newspaper date reads Friday, September 29, 2006.
When Superman flies towards Luthor's new island, his x-ray vision shows the crack in the sea floor heading away from him along his flight path, towards the island. When he turns back towards Metropolis, the crack is running towards the city. The only place where cracks should be spreading in opposite directions is the island itself.