Revealing mistake: A Decepticon ship crashes into and destroys a fair amount of the Tribune Tower's steeple. Later, a wide shot of the city shows the Tribune Tower with white blocks composited on top of it. The animators forgot to put the damage into this shot.
Watchful
14th Jan 2012
Transformers: Dark of the Moon (2011)
28th Jul 2009
Ghostbusters (1984)
Revealing mistake: As Dana's apartment crumbles apart to present the temple of Gozer, there is a tight shot of a gargoyle falling off an exterior corner. Carefully lined up with features on the gargoyle's face - but still readily visible - are the black strings that pull the gargoyle face off its mount.