Movies that drive me nuts: one or more of the Harry Potter you could hear Hedwig’s wings flapping – she’s an owl so you shouldn’t have been able to hear her.
The Green Mile – they kept changing the mouse. The last one was a long haired variety and looked nothing like the other ones.
Andre the Seal – they used a SEA LION!
And when I pointed out that the teeth were all wrong on Stuart Little, the animated mouse, a friend pointed out “but the fact that he is talking is ok.”