Continuity: When Snow White rips off her sleeves she has a tattoo on her right shoulder. Later, when she calls the animals to attack the guards, the tattoo is gone.

Continuity: In the scene where Charming and his goons storm the castle, Fiona is trying to close the secret passageway and doesn't get it closed in time. But when Charming bursts in, the passageway is completely closed.

Continuity: When the ship catches on fire, Shrek, Fiona and the rest completely disappear from the dock.

Other: There is one scene towards the end where the sun can be interpreted as coming from the front right (shadows top left to bottom right)(it's a long-distance shot of Far Far Away either as the women or the animals approach). However at the top left you can see a full moon - it should be crescent.

Audio problem: In the scene where Snow White is singing, you can tell the song she is singing was obviously recorded long before the movie was made.

Continuity: The "I Suck-eth" sign on Donkey's butt disappears after we see it.