Factual error: Crush the sea turtle says he's 150 years old and "still young." Actually, at 150, Crush would be almost twice the normal lifespan of a sea turtle, which is about 80 years. Contrary to popular belief, not all kinds of turtles have lifespans of over 100 years. It is tortoises, not turtles, that are known for their very long lifespans and, even then, the current record is 188 years old, not much older than Crush.
Audio problem: When Marlin and Dory swim into the deepest part of the ocean to reclaim their mask, they see a light (which we know later, belongs to an angler fish). They stop right underneath the light and says "What is it?" but his mouth doesn't match the movements. It looks as though the animators had Albert Brooks (Marlin's voice actor) say a different line than what was animated.
Continuity mistake: Jacques wakes up Nemo sleeping in his hut with a bunch of rocks. Nemo gets up and starts floating above the rocks. In the next shot, from the back of the hut, Nemo is still floating in the same spot, but the rocks have vanished.
Continuity mistake: Decorations inside the fish tank often disappear, appear in random places, or change directions and spots throughout the film.
Answer: This reference is pretty hard to spot. You need to be very familiar with Fight Club and David Fincher. The reference occurs in the scene when Gill is describing the plan to escape from the fish tank. The camera work and linear flow through a sequence of events closely remembles the early scene in Fight Club where the Narrator describes what is about to occur in Operation Mayhem.
hannisen