lionhead

Continuity mistake: When the Polyjuice Potion wears off, Barty Crouch Jr. resumes his own appearance from impersonating Mad-Eye Moody. It is difficult and painful. Every other time we see this transformation in other characters, it is easy and uneventful.

Upvote valid corrections to help move entries into the corrections section.

Suggested correction: It is probably a strain for him since he has been in the shape of Moody for a year. Or he is trying to prevent it somehow, or it is withdrawal symptoms. It's a magic potion; it could be anything.

lionhead

Correction: He only mouths "reward him", and does so after Dumbledore said it. He repeats the words to himself as he is wondering what Dumbledore means by them. Not as a mock, but questioningly.

lionhead

Corrected entry: There's no way anyone could cut off their hand with a knife the way Wormtail did. The only way they could do it is if they slowly sawed it off. Even if he raised the knife and swung it hard, there's no way it would work, the bone is way too strong. But Wormtail didn't even do that, he just placed the knife on his hand and moved it down. You couldn't even cut hair like that.

MikeH

Correction: Wormtail is not just "anyone" though. He understood the importance of each of the ritual's steps and getting the potion done just right. He is following Voldemort's orders and instructions. Wormtail's dagger may have been magical, or a charm could have been placed on its finely edged blade to be swift in its tasks. Also, Wormtail was in a highly charged state of mind, which only intensified the force he used to "willingly" sacrifice his hand.

Super Grover

If I recall, it's described in the book as being a "quick flash of silver" indicating as you suggested the dagger has got some magical properties.

Ssiscool

Correction: He didn't cut through bone, he cut his wrist and the knife moved past the bones. If the force is strong enough and the knife sharp enough it's definitely possible to do this.

lionhead

Corrected entry: When Barty Crouch Jr., as Moody, near the end of the film says about him providing Neville Longbottom with the book for the Gillyweed, Harry is mouthing his lines (before his close-up). (02:08:45)

Correction: He just licked his lips and swallowed, that's all.

lionhead

Correction: He was talking to himself because he was shocked by things that Crouch Jr was telling him.

Corrected entry: When Harry's name comes out of the Goblet of Fire, it is written on lined paper and not parchment. Wizards only use parchment.

Correction: In the books wizards only use parchments, but it is not stated in the movies that they never use paper.

Yep I even think its done intentionally. Barty Crouch Junior intentionally used muggle paper for Harry's name to make it more believable that Harry did it himself.

lionhead

I highly doubt that would be the case because he already managed to trick the cup why go the extra mile.

Ssiscool

Because he wants to be the only person Harry can go to for help.

lionhead

Corrected entry: After the first task in the tournament, Harry's arm is in a sling. But in the second movie, Madam Pomfrey stated that she can "mend bones in a heartbeat."

Correction: But his arm was fine when he was carrying the golden egg and cheering with his friends in the common room. Then the next day, he was wearing an arm sling. I don't understand.

Correction: Just because his arm is in a sling doesn't mean it's broken. He could have a tingling sensation that won't go away or his arm hurts when he moves it and they don't know why (magic). It's just a precaution.

lionhead

He actually got a big cut in his shoulder when he was falling from the roof, and the sling was to keep his arm and shoulder still so the cut would heal.

Pomfrey could easily heal that, though.