Continuity mistake: The second time Hugh Grant writes on the board (not "protagonist" - can't remember the word!) the writing changes between shots - most noticeably a C in the middle, which sometimes has a small loop at the top, sometimes not.
Continuity mistake: Near the end, Thomas is saddling a horse. He throws the stirrup over the saddle so he can cinch the girth. But he is interrupted by the presence of the witch he loves. Somehow, the horse has had its girth cinched and the stirrup is in its proper place, all without Thomas' help.
Continuity mistake: When Nick is instructed to leave hotel room #700 Chord verbally tells him to "go outside and turn right." but the on-screen arrow points left and we see Nick turn left. (00:29:39)
Continuity mistake: Roy is on his back at one point, seemingly knocked out. A shot later he's suddenly on his stomach before regaining consciousness.
Continuity mistake: When Michael Keaton goes to his dressing room following the light accident, the note on the flowers changes. It first reads: "They didn't have the whatever you wanted." After he removes his headpiece, the note reads: "THEy didn't have whatever you wanted - SAM."
Continuity mistake: Mr. Jones used his left hand to smack Jim across his right cheek/face. The injury Jim suffered (when it was even there) was on the left side of his face. The vertical slit (cut) on the left side of Jim's lower lip when he was in his office was not there (or too faint to be seen) when he was talking to Amy in the hallway. When Jim exited the building, the cut on his lip was obvious but the bruise on the left side of his face was more above his eyebrow than on the side of his left eye. (01:11:11 - 01:14:54)
Continuity mistake: When we first see the male volcano, he is an entire island with trees and forests. After many years have passed and sinks into the ocean, it can be seen the trees and forests have now gone. However, after he spews out of the ocean and is together with the female volcano, the male volcano suddenly has trees and forests around him again.
Continuity mistake: At the end when Sarchie is hugging his wife, in one shot the bandage on his arm has unravelled. In the next, it is neatly wrapped.
Continuity mistake: The pickup has its driver's side tail light shot out, but when it is pulling a quick u-turn and just before the truck smashes into the snow bank, the taillight is intact. (01:40:39)
Continuity mistake: When April shoots the alien, they all go outside to look at it. Behind them, you can see the windows boarded up, but they don't board them up until later in the movie.
Continuity mistake: The car has rally seats through most of the film but at the end it has regular car seats.
Continuity mistake: When Newgate is feeding the blind woman in the asylum, the position of her hands on him when he is pretending to be her son keep changing from the chest, to his neck, to his head.
Continuity mistake: When Dex sees "his" son for the first time, the kid in close-ups is playing with the toy that dangles from above, and there's a toy football by him. In the wider angles none of the above is happening. (00:38:40)
Continuity mistake: In bedroom the Thursday morning they are about to meet her sister, Jessica Alba leans in to kiss Pierce Brosnan. He begins quoting Hamlet, Alba's hair is cascading in front of the left shoulder with very little down her back. Close-up on Brosnan and a thicker mass of her hair is present, less sparse than it was before. (00:05:05)
Continuity mistake: When the guy is protecting his home and clearing the window with his shotgun you can see him breaking the glass on the bottom left window pane. In next shot it has the piece there again. (01:43:55)
Continuity mistake: In the "Another Brick in the Wall Part III" section of the show, look at the missing section of the wall on the right hand side. The bottom bricks of that section change from being filled in to being empty depending on the shot. (01:02:40 - 01:04:00)
Continuity mistake: Rich is dangling a light bulb above his dad's head. When the camera shifts to a close-up of Rich, the light bulb is higher - almost across from his own face - but back to dangling above his dad's head with the next camera shift. This is independent of Rich's dad telling him to "hold the light steady." (00:06:23)
Continuity mistake: In a scene at a night club, Colin Firth's friend has a glass of red wine in his hand and then he has a glass of white wine.
Continuity mistake: In the beginning, Schapelle checks the boogie bag in in the check-in counter. Then she's seen carrying it over her shoulder. Then a baggage handler takes it away from the check-in counter.
Continuity mistake: Juana's dad buys her a bottle of lime juice hoping she can save time that way, not having to squeeze it herself fresh. She passes the bottle back to him holding it by the middle section in one shot, and by the neck in the next. (00:06:00)