Eraserhead is more than just a film. It's an experience. It's one of those films that it all depends on how and where you see it that decides your reaction to the film. Which is why I find Eraserhead to be one of the scariest films ever made. If you get a chance, see this film in a theatre late at night, or on a good T.V. with a good sound system. This film is way more than just sitting down and watching a film. It's a film that has to be seen in a good environment.
So, what other films are affected by where you see them? For one you have to see how the film is shot. The recent film Children of Men is pretty much universally adored by film fans is a film that doe not have the same affect when being watched on a T.V. The film is shot for theaters and the full affect of the climatic 10 minute uncut action sequence isn't half as effective when seen on a T.V.
So, for a simple blog entry tonight I say this. If you know you're going to go see a film the audience matters just as much as the film itself. I recently saw Ratatuoille with a french friend and I am sure the experience would have been very different with another person. Films are just as important as theatre. The advantage theatre has over film is that the performers exist in-front of the audience.