20 Things You Somehow Missed In Ghostbusters
6. Dana’s Levitation
Since it was 1984, Ghostbusters was right on an interesting cusp of practical and special effects and made use of both in different ways. That being said, because of how expensive it was, practical ideas tended to overrule digital ones.
Thus, when Dana Barrett (or rather Zuul) levitates above her bed, this was all done live with physically trickery. Weaver is wearing a full body cast that can support her weight, attached to a steel arm hidden in the drapes behind her. This enables her to not only be able to lift up off the bed but also spin 180 degrees so that she's facing downwards.
They just don't make 'em like they used to.