Oh man, that reminds me of an old MST3K I saw once. The movie was "Girl in Gold Boots." The editing of the movie was so terrible that there was this scene in a diner where one character suddenly materialized right in the middle of it. Dude literally appears out of nowhere and no one seems to notice. God, and it wasn't even like they cut to another shot, and cut back to original shot and suddenly he was there - no, he teleports in on-screen.