'Tis the season to stay up late and be kept up even later by watching ultra-creepy horror flicks to prepare for Halloween. It's hard to pick just 20 favorite films out of an entire genre dedicated to suspense and spooks. From the 1930s all the way until the 2000s, scary movies have spanned the history of filmmaking for a reason: They're addicting to watch, even though you might have to look away from time to time. You might miss some of the gorier details, but as long as you don't miss these 20 movies, you'll be in good shape.
Courtesy of Warner Bros. Here's Johnny! -- with 20 movies that'll scare the living daylights out of you.