Continuity mistake: When Sir Ulrich first battles Count Adhemar after the first hit Sir Ulrich is taking to Roland stating how hard he hits. The camera angle from the front shows his arm bent in front of him but the camera angle from the back shows his arm resting on his leg. Happens about 3 times during the entire scene. (00:45:40)
Continuity mistake: When William is riding through the streets of London, Roland is shown walking in front of him. Next it shows Wat, Chaucer, and Kate walking behind him closest to the wall on the left. The next shot shows people on their left. Then it switches back and forth a few times. (01:34:05)
Continuity mistake: In the scene where Ulrich first rides to compete as Sir Ector ("We Will Rock You" is playing), there are various shots of the crowd enjoying the song. The woman seated to the right of the tournament sponsor (as you look at the screen) has a Princess Leia-type hairdo. Her buns sit high on the sides of her head in one shot, down lower in the next shot of her, and back up high in a third. (00:03:55)
Continuity mistake: When Wat Falhurst is stretching out Sir Ulrich's arm after losing on purpose, every time the camera pans back to Wat from Sir Ulrich, the horse behind Wat which is covered by a striped blanket is either there, gone, or moved to a different position. (01:24:00)
Continuity mistake: When William is let out of the stocks you see him take his hands out of the holes, however in the next shot you see him take his hands out of the holes again. (01:53:30)
Continuity mistake: When Geoffrey Chaucer is first seen walking naked down the road, the dirt smears on his body change with every shot of him. (00:14:50)
Continuity mistake: During the last match between William and Rufus the sun changes between shots.
Continuity mistake: In the part before the world championship, when everyone is trying to convince William to run away to avoid capture, the front edge of the large shoulder plate of his armor is in front of his breastplate in some scenes, and behind it in others. He stands virtually still during the scene, except for turning slightly. (01:44:20)
Continuity mistake: In the scene where William is having a discussion with Jocelyn in the stables, look at the top left corner of his breastplate. Between shots it changes from being tucked under his shoulderplate to being on top of it.
Continuity mistake: At the end of the film, when Heath Ledger has defeated Rufus Sewell, the amount of wood pieces in the air changes between shots.
Continuity mistake: When Sir Ulrich is showing the rest of the group how they dance in his homeland, the camera pans back and forth to him and Jocelyn a few times and everytime it pans back to her, the people behind her are either different people or they are in different positions. (00:57:10)
Continuity mistake: When Sir William gets off his horse after defeating Count Adhemar, the hole and blood on his right shoulder disappear and then reappear. (02:06:40)
Continuity mistake: When Geoffrey jumps up to give his introduction during the final joust, he runs to the stands and you can see Jocelyn and Sir William's father just sitting next to each other. The camera angle changes and you now see Jocelyn's arm wrapped around John Thatcher's. (02:02:05)
Continuity mistake: When Heath Ledger is chatting to the little girl who tells him that his father is still alive, it is pouring down with rain and Heath brushes his hair back. It then keeps moving around. Sometimes it is brushed back and others it is hanging forwards or all tousled. (01:38:25)
Answer: The reason he is so agitated has to do with the manner in which he won the tournament. If you'll recall, William states, "I'll not be champion until I beat Adamar." Adamar had forefeited beforehand, (not wanting to joust against royalty) therefore not giving William a true victory. After his half won victory, Jocelyn's (Shannon Sossamon's character) inane chatter just rubbed him the wrong way. It had nothing to do with what she was saying...if anyone had spoken to him he would have reacted in the same way.