Toy Story 3 (2010)
In the original Toy Story film, Buzz and Woody narrowly escape from the clutches of Sid, a disturbed child who enjoys dismembering toys for fun. In Toy Story 3, he makes an appearances very briefly as a garbage man. Die-hard fans surely didn’t miss this one, but if you pause, you’ll see it too!
Back To The Future (1985)
Those paying very close attention while watching Back to the Future will have noticed this small detail. Marty McFly and the Doc meet up at the Twin Pines mall in order to travel back in time. Later in the film, Marty runs over one of the two pines, and when he comes back to the future, the mall is appropriately renamed.