Presented in alphabetical order...

E. T. (1982)
The night E. T. and Elliott attempt to contact E. T.'s "people" is Halloween night.

Kramer vs. Kramer (1980)
During the Kramer's separation period their son appears in a Halloween play at school.

To Kill a Mockingbird (1962)
The Finch children are attacked on Halloween night.

The Two Little Bears (1961)
Two young brothers ask to be real bears for Halloween.

Visit to a Small Planet (1960)
Kreton lands on Earth on Halloween night.


OK? Does anybody else remember any other films where Halloween takes place? Don't say "Halloween", because that's obvious.