Phantasm- (noun) an illusion of the imagination.
There was this crappy b-horror movie made in 1979 (I think) by Don Cascerelli called Phantasm. What it lacked in scares it made up for in me being able to crack wise at it. (Think Mystery Science Theatre 3000, only funnier.)
But what really made this movie noteworthy for me (other than the Jungian archetypes I extract from everything) was it's creative use of dreams as phantasm. The main character, a young boy named Mike, (who has just had both his parents, and more recently, a friend of his brother's die on him) starts having these wild dream fantasies about the funeral director being an evil monster. Acting upon these dreams, the gang investigates to find "The Tall Man" is up to something at the funeral home-- or is that all a phantasm itself? Watch and find out!