Continuity mistake: After Superman has set down the chopper, Jimmy and Lois step out and Jimmy places his hand on the chopper blade and begins to barf. But then the camera cuts to an angle behind Jimmy as he barfs and suddenly he is much closer to the tip of the blade. (00:21:30)
Continuity mistake: Once Lois and Jimmy are out of the chopper, Doomsday bursts up from the rubble of the building and begins charging at Superman, who then charges back at Doomsday. As they collide, you can see down a side street at the buildings, several cars in the road, and some rubble. Doomsday and Superman bounce off each other and slide back in their respective shots, and then go at it again in a fist fight. The side shot then shows the same street, only now some of the buildings on the left side are noticeably different, the cars have vanished from the street, the smaller pieces of rubble in the road have changed around, and the street lines in the road have vanished. (00:21:55)
Continuity mistake: After getting hit by Doomsday's elbow, Superman hits the ground and slides across the road on his face, mostly his chin with his arms flailing around behind him. It cuts to a different angle and instantly Superman has pushed up off the ground with his hands and is rolling over. (00:22:00)
Continuity mistake: After Superman saves Lois and Jimmy in the chopper, he and Doomsday get into a fist fight for a moment, Superman getting a few good hits off, followed up by Doomsday spinning and slamming Superman in the face with his elbow. The shot cuts to a different angle as Superman staggers away and falls, and suddenly the number of spikes on Doomsday's shoulder goes from 4 to 1. (00:22:00)
Continuity mistake: Having saved the chopper, Superman and Doomsday go at it again in the street. As they are punching, you can see buildings on the left side of the street, and in the distance there is a small blue building with yellow windows and a taller building beside it to the left with a large sign on top. It then cuts to a close up of Superman getting a good punch to Doomsday's face followed by Doomsday smashing his elbow into Superman's face, and suddenly another building appears between the small blue building and the other one, and the large sign has vanished off the building that was beside it on the left. (00:22:00)
Continuity mistake: After Superman recovers from getting elbowed in the face, he knees Doomsday in the chin and then flips over him and throws him hard at a building. But if you watch closely, the building it shows him being thrown at is different than when it cuts to the next shot to the building he hits and goes through. In fact it the building he hits looks more like the building off to the left of the one that he was thrown at. (00:22:05)
Continuity mistake: When Superman throws Doomsday through a building, Lex Luthor is shown watching from his office from an over the shoulder view from his perspective. It then cuts to an angle from further behind him and suddenly an antenna appears on the building, and the design of the windows change. (00:22:10)
Continuity mistake: As Superman is throwing Doomsday at a small power station, you can see several cars out in front of it on the two lane road. Notably on the left side a small truck in the middle of the road, that's not moving at all, and a small pink sedan car right on the edge of the sidewalk. But only a few seconds later as Doomsday runs through the fence back in the other direction carrying Superman, suddenly the truck has vanished, and the pink car has changed to a brown station wagon and is facing the other direction. The two lane road is now a three lane road, and the sidewalk next to the fence is suddenly much more narrow. (00:22:15)
Factual error: Superman throws Doomsday through a small power grid in the middle of Metropolis and then Doomsday drags him back through it, nearly obliterating the plant completely. Yet with this power station destroyed, not a single building or street light in the surrounding area is affected by the sudden change of power flow. (00:22:20)
Factual error: After Superman plows through a building with Doomsday, Doomsday flies into a power plant. He goes over the top and snaps the power cables and hits a green box, causing a few of the red towers to fall. But when Doomsday grabs Superman and takes off running through the power plant, the damage there is suddenly way more extensive than what would have been for just snapping cables and causing the towers to fall. (00:22:20)
Continuity mistake: In the first shot it is seen, the fence of the power station that Doomsday is thrown at shows that gate part is slightly taller than the rest of the fence and has one sign on each door of the gate. But then moments later as Doomsday is plowing through the gate, it is now the same height as the rest of the fence, and only one sign is present, which becomes smaller and a darker color. Also two vehicles appear behind the fence that were previously not there. Also on the gate there is a sign on each side of it, but before it breaks there is a sign only on the right side. (00:22:30)
Continuity mistake: Just before Doomsday ploughs through the fence of the power station carrying Superman with him, you see down the street he is about to go on that there is a yellow 18 wheeler with gray trailer and an pinkish car on the left side of the street. But then it cuts to a close up of those same vehicles as Doomsday steps on one to jump, and suddenly both have turned into green cars. (00:22:35)
Continuity mistake: After their fight destroys a small power plant, Doomsday grabs Superman and takes off running with him. Doomsday steps on a green car and leaps into the air through the street. As the shot cuts to show him coming towards it, the power plant is shown smoking behind them, but the green car has vanished. Unless it's the car suddenly on fire... In which case the flames instantly appeared between shots. But Doomsday just crushed the roof with his jump, which couldn't have started a fire. (00:22:35)
Continuity mistake: When Doomsday slams Superman down into the subway, the hole they make in the street is right in the middle of a crossing. But a minute later in the film as civilians are walking up to the hole, there are no lines anywhere around it. Moments later after Jimmy takes a picture of the hole, the shot cuts to a far angle and now the hole is next to the crosswalk lines, and in that shot the stairway entrance to the subway station also vanishes. The road also becomes much wider with more lanes, and the red truck turns around. (00:22:40 - 00:23:25)
Continuity mistake: Doomsday leaps into the air and smashes Superman down into the ground, crashing down into a subway station. As they are hitting the floor, you can see the brown columns holding up the roof are almost to the edge of the walkway by the tracks and touches where the tan area of the floor changes to a light green color at the end. But then Superman shoots Doomsday back with his laser vision and Doomsday looks at him angrily, and now the columns have a good few feet between them and the edge of the walk way. (00:22:40)
Continuity mistake: Once Doomsday slams Superman down through the ground into a subway station, he has him by the neck against the floor, and then clasps his other hand around Superman's neck. When he does, Superman looks up at him with his eyes just before he blasts Doomsday away with his laser vision. But his head is still turned sideways. It cuts to a different angle and suddenly Superman's head is fully facing up towards Doomsday. Also the grip in how Superman and Doomsday are holding each other changes a bit, notably with their hands. (00:22:45)
Continuity mistake: After Superman blasts Doomsday away from him in the Subway station, Doomsday grabs him by the leg and flings him to the other side of the tunnel, breaking a large hole in the wall. As he hits, you can see there is a subway exit on the same wall about a yard or so away from where Superman hits. But then when Doomsday leaps at him to continue his attack, the wall is suddenly solid where the exit once was. (00:22:50)
Continuity mistake: Doomsday and Superman leave a sizable hole in the roof of the subway station as they slam in through the streets above. But when Superman throws Doomsday down onto the tracks, the shot shows the same spot where they made the hole coming in, only now the roof is devoid of any damage and the hole entirely gone. (00:22:55)
Continuity mistake: During their fight in the subway, Doomsday throws Superman through one of the red support columns. But in the shot where Superman throws Doomsday onto the tracks, all the columns are in perfect condition. (00:22:55)
Continuity mistake: When Superman throws Doomsday onto the subway tracks, he slides across them and breaks the railings. But when Superman dives at him and receives a monstrous backhand slap to the face, which sends him down the subway tunnel, the reverse shot showing Doomsday has him standing on subway rails in perfect working order and condition. (00:23:00)
Answer: It was his way of coping with grief after Superman dies. Jimmy felt he needed to be in a new environment, away from painful memories. Similarly, Perry White turned to alcohol for solace, while Lois Lane sought out Clark's mother, Martha Kent for help.
raywest ★