Continuity mistake: Lois is caught in a daze staring at the co-worker that is now in Clark's place. She has her left arm up resting on the back of her chair. Her phone rings and she turns to look at it, and then the camera cuts to a different angle, and suddenly her arm is down off the chair. (00:43:45)
Continuity mistake: When Jimmy and Lois stop in the ally beside the Nite Club, Jimmy is in front of the window of the next building, close to the right edge of the window, and seen by the position of his feet next to the line on the side walk. It then cuts to a close up of him as he shows off his Italian silk, and suddenly he is off to the left of the window. (00:44:45)
Continuity mistake: Lex has Kryptonite jewels on the knuckles of the metal gloves he wears when he is beating up Superman in the ‘Rumpus Room'. After he knocks Superman down and is climbing on top of him, the Kryptonite has vanished, but as soon as he stops moving, they reappear in the same shot. (00:41:55)
Continuity mistake: After beating up the clone of Superman in the Rumpus Room, Lex walks up to the container holding the real Superman's body and talks to it. There is a towel draped over Lex's left shoulder, and the shadows are on the right side of Lex's face and body. It then cuts to an angle showing Lex's reflection in the glass of Superman's container, and suddenly the shadows on his body move to the same side as the towel. It cuts to a different angle and the shadows go back to his right side. (00:42:50)
Continuity mistake: Lex says "Red and green, the colors of Christmas." When he does, he holds out his arms to his sides palm up and looks wondrously up at the red solar lamps. It then cuts to a closer angle and instantly his right arm and hand are in a different position and his body is turned differently just before he begins pounding on Superman. (00:41:35)
Continuity mistake: Lex holds up his Kryptonite gloves and is about to beat up Superman in the ‘Rumpus Room'. When he holds up his right hand it cuts to a close up and one of the joints on his thumb piece disappears, making it a 2 piece part where it was 3 pieces. (00:41:30)
Continuity mistake: When Superman enters the ‘Rumpus Room', the red solar lamps turn on and there are lots of red hexagons on the ceiling and floor that glow as well. Throughout the entire scene, the red hexagons are never consistent in size and position from one shot to the next. It is most noticeable when Superman hits the ground after Lex's assault and the hexagons are roughly the size of his ear. But then in the high shot, they are bigger than his whole head. (00:41:15 - 00:42:20)
Continuity mistake: As Superman walks into the ‘Rumpus Room', the door shuts behind him as he crosses the threshold. It cuts to a shot behind Superman and instantly he is almost totally on the other side of the room, away from the door. (00:41:15)
Continuity mistake: In the overhead shot of Superman standing in Lex's office, he is standing on a stage like area raised with small stairs. The circle he is standing on is a gold color with some blue towards the outside then a gold ring. And Superman is standing almost dead center. A couple of shots later, without him moving, it shows Superman's feet and now he is standing closer to the edge, and the circle is now totally blue except for the gold ring around it. (00:40:45)
Continuity mistake: The day after his ‘resurrection', Superman is standing in Lex's office looking for him. Behind him in the high shot, you can see Lex's desk with a computer monitor close to the center in front of the chair. It then cuts to an angle in front of Superman and pans across the same desk, and suddenly the computer monitor is twice the size and right on the edge of the desk, a second monitor appears on the far right of the desk, and the armrests on Lex's main chair vanish. (00:40:40)
Continuity mistake: As Superman is walking up to the room that Lex is leading him to, it opens up and there is the red and green panel of the door on the side, but on the metal of the door frame. It then cuts to a closer, higher angle and suddenly the panel is beside the door frame on the wall. (00:41:10)
Continuity mistake: As Superman is saying to Lois that he will see her soon, the buildings can be seen behind them in the close up. It cuts to a far shot before he lifts off and the building that is seen above Lois' head, the windows and lights change position. The building behind Superman's head also changes slightly and becomes more symmetrical. (00:39:50)
Continuity mistake: When Superman is walking through the mazelike area in Lex Corp looking for Lex, he walks down a hall that has multiple tiles and stuff on the floor. It cuts to a different angle as he reaches the end of it and suddenly the hall is much more narrow, and the tiles become singular and bigger. (00:40:55)
Continuity mistake: Once Toyman throws the bus off the roof, you can see the police cars on the street below and how they are arranged. It then cuts to a view from inside the buss at Lois and the little girl hanging on for dear life and out the back window of the bus you can see the police cars. Only the ones visible are not in any way like the patterns you could see previously. They rearranged themselves. (00:37:35)
Continuity mistake: When the doll leaps at Lois with a knife, she grabs one of three reddish pink backpacks and smacks it into the window. The back pack she grabs is the one on the left, and as she grabs it you can see that the middle backpack has a rectangular shape on the front that is just an outline, and the backpack on the right has a similar spot but is round and yellow. Then when the children are getting off the bus, the remaining two backpacks are shown hanging there still and the one that was in the middle now has a yellow oval shape on the front instead of the rectangular outline. The design of the backpack is also different. Also in the shot just before this, the same spot is shown, but the backpacks are missing. (00:36:35)
Continuity mistake: A black cop thanks Superman as some white cops lead away Toyman. Then Superman lifts off to fly away and a shot from a different angle shows the black cop suddenly vanishes. (00:38:45)
Continuity mistake: After Superman apprehends Toyman, he sets down and the police lead the villain away. A cop walks up to Superman and says thanks, Superman turns and looks at him with a straight face. It then cuts to a close up of Superman's face and instantly he has a big smile on his face. (00:38:40)
Continuity mistake: After their awkward goodbye when Superman leaves Lois on her balcony, her hands are at her side. It then cuts to a front shot and suddenly she has her hands crossed in front of her. (00:39:55)
Continuity mistake: Lois grabs one of the three red backpacks from the front of the bus and smacks the doll with it. The backpack then just completely disappears. It's not in her hands, it's not back on the hook, it's not on the floor, nor on the ground outside of the bus. It just vanished into mid air after she hit the doll and is never seen again. (00:36:25)
Continuity mistake: When Lois is sneaking up to the door of the school bus, you can see the front wheel appears to be one solid piece all the way around and in the spokes and center. But a bit later as she is leading the children off the bus, there are now gaps between the spokes and the center is hollow. The wheels change several times in this scene. Also the front bumper suddenly becomes elongated. The headlight is also missing from the first shot and reappears. (00:36:05)
Answer: In the comic book, Doomsday was put in a strait-jacket, strapped in metal bondage and placed in a cube like metal prison buried deep in the earth. It took him centuries just to break the bonds, then spent more centuries just punching his way out. With earthquakes, volcanoes and other natural disasters those events could shift Doomsday's prison to the surface.