Braveheart

At one point, when a bit player escorts Wallace's friend away, he utters his only line without a Scottish accent. Someone from southern California must be visiting Wallace's army.

In the scene where Wallace first meets the future Queen and is left alone with her in the tent, the wimple she is wearing appears to have a life of its own - first it's on her chin, then over her chin, and then under her chin.

In a major fight scene two soldiers on opposite sides are jumping and spinning and tapping each other on the head with their swords.

In one of the major battles, Wallace is charging down a hill with a large sword in his hand, then nothing, then a large axe.

In the movie, Isabella of France marries Edward II, is sent by her father-in-law Edward I to talk to William Wallace, falls in love with him, warns him out of several traps, has an affair with him, and taunts Edward I about her being with Wallace's child while Edward lies paralysed and unable to speak. Wallace is then executed, end of movie. William Wallace was executed in 1305. Edward I did not die until 1307, and was in fairly good health up to that time (he was leading an invasion of Scotland at the time). Edward II did marry Isabella of France...in 1308. In France. Afterwards she came to England for the first time. She never met William Wallace or Edward I. Finally, her first born child, Edward III, was born in 1312. Unless Wallace had come back from the dead, there was no way for him to father that child.

At the end, Wallace's friend is charging in slow motion, and if you look closely you will see his battle axe flopping around like its made of rubber.

In another major battle scene William Wallace is running into battle with a bloody claymore in his hand. In the next shot of him it is back in its sheath. Then in another scene he has it in his grasped again but this time it is clean.

At the end, when the main executioner bends down, his cloak shifts and you can see he is wearing brown shoes with red rubber soles. These rubber soled shoes are worn today and had not been invented yet.

When people stab each other, there's no blood on their wound or sword.

Edward Longshanks did not kill his son's gay lover. He did a natural death in real life and was not thrown out a window or an arrow slit. (We might let that one go for dramatic effect)

At the end when William Wallace (Mel Gibson) is being led to be executed he is pelted with food. Much of it sticks to his face and hair. A few moments later when they are standing him up he is completely clean.

When Mel Gibson rides his horse into a man's bedroom and hits the man in the head with his mace, watch it in slow motion. Just before he hits the man, you can clearly see that a dummy is substituted and Mel hits the dummy's head. It is a choppy edit, and really obvious.

During one of the big battle scenes, a white "panel van" is seen driving by in the background.

In the big battle scene, an old man (the same one that held up a gate after he got shot by an arrow in an earlier scene) gets his arm chopped off with a battleaxe. Two scenes later (when Wallase is getting his knighthood), the arm is back.

In the battle scene where they flanked their forces and and were going to use the long wooden spears on England's knights, they already had the spears out when it showed England's horses coming closer. Just look around them. It only shows for a second when it is zooming in pretty fast.

In the first battle scene, some fake blood splatters on the upper right corner of the camera lens and stays there for two frames.