Best animated TV factual errors of 2004
Factual error: When Princess Clara gives Wooldoor the shotgun, telling him that he has to shoot Live Action Cow, she racks the action, thus chambering a shell. Just before he 'shoots' the cow, Wooldoor racks the action again. This would eject the shell, but no such thing happens.
Factual error: In the scene where the large dutch guy tells his story about his life in Holland, there are a several windmills. However, the blades are placed on the wrong side, that way it's not possible for a windmill to turn clockwise, which it does. If the blades were placed correctly, they would still turn to the wrong side, because wooden windmills in Holland are always turning counter-clockwise.