30 items
A film marathon needs a spine or it becomes three unrelated films and a nap. Draw a theme and the choosing becomes easy, because the constraint does the work. Thirty themes spanning directors, decades, settings and the deliberately daft. Best run with a group where each person picks one film that fits: the arguments about whether something qualifies are reliably better than at least one of the films.
All 30 entries that will load into your picker
More from Entertainment, and a couple from elsewhere