For example, once upon a time at a lake resort called Sleepy Hollow, I attended a Monday night movie (lots of the kids at the resort were there, and there was good popcorn). I knew that I'd enjoyed the movie; I even vaguely knew that it inspired a bunch of us kids to map out what we considered the "secret passages" all around the grounds, a map which I have long since lost. But for the longest time, probably more than eight years, all I could remember about this particular movie was that, toward the end, a girl kisses a boy in something like a cave. After the kiss, she remarks that "she didn't know that So-And-So wore braces," which So-And-So does not, because this girl was actually kissing her love interest's younger brother. I only figured out the name of this movie (The Goonies) once I overcame my general fear and embarrassment of ever talking about kissing and related this movie ghost to someone else. I always enjoy solving the mystery of another movie ghost.
A current ghost of a movie that I know I saw maybe five years ago on tv: There's some sort of virtual theme park, with Medieval and Western lands as well as at least one more, that goes malfunctions and ends up killing all of the park-goers. Any ideas what movie that might be?