You surely know that situation: You're doing something, doesn't matter what, but suddenly a scene or small snipped pops up in your head from a movie you saw in your childhood. You have absolutely no idea what the movie was about nor what its name was but you want to know that. You want to watch that movie again badly.
I had this feeling with some mind snapshots of a movie. What I knew was that it was about aliens from the 10th dimension, a scientist travels there by going through a mountain in a rocket or something, when he comes back he is able to see aliens from that dimension which are appearing as normal people among us. That's it, everything I knew about the movie. And for years this "teaser" of the movie popped up in my head without warning from time to time. Dammit.
Look at it. Don't mind the actual content of this panel but look at the right top. The creator of these comics adds his name and a different "title" on each panel. This time his sign was "Evil From The 8th Dimension". WHAM! It hit me. I knew that sentence.
A quick Google search came up with a movie called "The Adventures of Buckaroo Banzai Across the 8th Dimension". Read through the description and yep! that's the one I've been searching for for ages. Perhaps I'll try to get my hands on a copy of that if I mind. Dunno because it's also listed on badmovies.org...
At least those flashbacks are hopefully over now. Another one which caused me that experience was "Spaceballs" but I resolved that mystery years ago already.
Do you also have or had such mysterious movie-flashbacks? Tell me!