The end of The Witches of Eastwick (1987) has one of the best and most terrifying FX scenes of all time.

It is a actually brief however efficient scene that scared the hell out of after I was a child. Jack Nicholson's transformation is frightening as hell, even his small stay that floats aftermath, and the following vanishing look nice

Round minute 2:30:

Even immediately 35 years later it holds on, and I’m not even positive what we’re taking a look at. I assume it’s sensible results? I don't assume CGI was that superior in 1987