Deliberate mistake: At the beginning of the Fellowship's journey, they are resting on a hilltop (Hollin) with rocky formations. Bill the pony is tethered in the background in one shot. Then come the spying crows from Saruman and they all quickly hide. When the crows swoop in closer we see no-one, but who hid the pony and where? (01:37:45)
Deliberate mistake: After Carmen rescues Juni on the boat/sub, he accidentally re-engages the autopilot and they submerge. In the next shot as two Thumb Thumbs jump off their speedboat, the name, 'Donzi', that is written across the side of the boat, is backwards. This shot is flipped. (00:24:10)
Deliberate mistake: Whenever we see the computer generated Lou, he never has genitals.
Deliberate mistake: When her father jumps on the brakes, they lock up, even though the car is supposed to have ABS, which is supposed to prevent this from happening.
Deliberate mistake: At the beginning, we see the Scorpion King leading his army into battle. However, despite people being stabbed with swords, and slashed, there is no blood on any of the soldiers, nor on their weapons. Kind of hard to believe war was that clean back then. (00:01:40)
Deliberate mistake: In the infamous coin toss scene, Cuba's call is disputed. However, it appears that the coin on the ground is in fact in agreement with his call. However, he explains later that they use a special commemorative coin that is hard to read as it may have what appears to be a head on both sides. Therefore, the coin may have had a head come up, but it was agreed that that side would be 'tails'.
Deliberate mistake: Jay and Silent Bob are kicked off the bus to Hollywood because they don't know they have to buy a ticket. However, in 'Chasing Amy,' Jay tells Holden that he and Silent Bob are taking a bus to Chicago. Jay even has what appears to be bus tickets in his front pocket, so he knows a ticket is needed for an interstate bus. And even if he thought it was free then, he would have found out about needing a ticket much earlier. Obviously, the earlier scene was disregarded for the sake of the joke.
Deliberate mistake: When the captain jumps towards Scott, the distance between the two rows of seats is three times bigger than the other rows shown, obviously to allow for the fight, but still really weird when you look at it.