Day dreamers in movies

[Floris]

Know any other films with a key character showing a considerable amount of day dreaming? Having a hard time coming up with an extensive list! Of course there are many, many films with short scenes of fantasies like American Beauty but I was interested in those where day dreaming formed a significant part of how the character is.

The Secret Life of Walter Mitty

A Nightmare on Elm Street 3: Dream Warriors

Heavenly Creatures

[Chris Wheatley]

I seem to remember a British film from the sixties with Tom Courtney called Billy Liar that involved the main character having extensive daydreams. Pretty obscure I know but maybe you can track it down