Continuity mistake: When Puss in Boots plants his sword in the ground then jumps out of his boots, his sword, boots and hat are nowhere near any trees or grass. Yet after attacking Shrek, Puss in Boots lands in his boots, and his boots, sword and hat have moved to being right beside a tree. (00:32:30)Hamster
Other mistake: This is a UK/US vocal talent variation. In the UK version the voice of the Ugly Stepsister is that of UK TV/Radio Presenter Jonathan Ross yet the vocal talents are credited as CNN talk show host Larry King. Also, the voice of the Red Carpet Reporter is none other than UK Pop Idol Extra presenter Kate Thornton, yet again, the voice is credited as Hollywood reporter Joan Rivers, whom the physical appearance of the character is based on. (00:28:20 - 01:03:50)
Continuity mistake: Puss saves the Gingerbread Man from drowning in the castle's moat by catching him with his sword, however, he is on Donkey's back and the drawbridge is a couple of meters above the water. So the sword would have to have been 2-3 meters long to get down to the Gingerbread Man.Jacob La Cour
Audio problem: When Fairy Godmother is lying on the piano using her wand as a microphone and singing about tossing and turning, sometimes Kyle's hands don't match the sounds of the piano. This is especially visible in very last shot - just before she says "Hit it", Kyle raises one hand and then we hear a part requiring both hands.
Other mistake: When Shrek, Donkey and Fiona first travel to Far Far Away Land, the shots and dialogue imply that it takes a few days to get there. Or at the least, several hours.When Pinocchio, Gingerbread Man and others go to rescue them, they arrive within the space of one or two songs at the concert.