Revealing mistake: During Quidditch tryouts, when Ron blocks the Quaffle with his head in the closeup, Ron's body disappears at the bottom of the screen below the digital editing line. (Only visible on fullscreen DVD).
Continuity mistake: After Bella awakes from the first nightmare, we see her Romeo and Juliet book on the pillow beside her. When Charlie brings in her presents the book is gone, but then reappears on the pillow between shots. (00:03:00)
Continuity mistake: When Mike's talking to his son in the school cafeteria (just before his ridiculing of Stan, the bully) keep an eye on his burger - it's sometimes in his hand, sometimes not, and changes position in the box and tray as well. (00:36:30)
Continuity mistake: During the prison fight scene, Silk Spectre's stiletto boot heels are alternatively flat-soled from shot to shot, for the stunt woman's benefit.
Continuity mistake: Gambit pushes Logan, who smashes through a wall. This hole becomes much, much smaller when Gambit climbs out into the alley. (01:10:00)
Continuity mistake: When Coraline is in bed in the other world for the first time, she's holding the picture frame showing her friends face down. When the shot changes to her again, the frame is facing up. (00:21:35)
Continuity mistake: Tiana wears a pair of gold earrings during Charlotte's ball. They disappear when she's watching Charlotte dance with the prince and reappear later. (00:23:55)
Revealing mistake: After Chuck steps on the toy duck, he looks up to see the alien family and their house behind them. However, there is no reflection of this on his visor, just an empty field and the trees beyond.
Continuity mistake: When Goku calls Fuller's name for "whacking my bike", extras are recycled, appearing both behind Goku and the bullies (super-easy to spot a girl in pink and teal, with her buddy wearing a blue varsity jacket). (00:06:50)
Other mistake: When 1 strikes off 2 (I think) from the calendar we can see that 1 is Wednesday, 2 is Thursday, 3 is Friday and that 4 is Saturday but 5 is Monday; meaning that Sunday has no date.