6. Stay Puft Marshmallow Midget

One of the all-time best set-pieces in movie history is the materialisation of the Stay Puft Marshmallow Man as he lays waste to New York City in Ghostbusters, stampeding around, at least until the truth is revealed that, in fact, Stay Puft is a regular-sized guy stomping through a miniature city. Superbly achieved though the effects are - and we all know they
didn't actually have a giant animatronic marshmallow man walking through New York's streets, awesome though that would be - I prefer to stick to the "how
did they do that?" sense of fascination I had as a kid. On the plus side of this image, I
really want a Stay Puft suit in time for Halloween...