Forbidden Planet (1956)

[selden]

On a related note, Anders had an idea for dream beings that would be conjured up by group minds. A bit like Freddy Kruger - if a group of people in a shared consciousness all dream about the same person, does that person become real?

I would say that has to depend on your definition of "real" and how you want to use it. In some sense, Freddy already exists.