78/52 (3.5 stars) — If Psycho is one of your favorite movies to watch around every Halloween, or favorite movie in general, then 78/52 is for you. This is a fast-moving documentary that analyzes the importance and cultural impact of the most famous moment in Alfred Hitchcock’s 1960 horror classic: the shower scene. By investigating every facet of the scene — from its score, film editing, shot compositions and social context of the era — 78/52 is a valuable resource for any film fan. Not rated, 91 minutes. At the Alamo Drafthouse Cedars in Dallas.