There's a few other moments in the film where Tyler himself is spliced into it. There's one where the Doctor is explaining to Nortons character he needs more sleep, and Tyler flashes in the background grinning. He also appears in one of the office scenes.Noobeater wrote:
One of the things tyler did to screw with society was to add a milisecond (or near enough) of hardcore porn to family movies when the reels were changed during the film, this transition between the reels is shown by a little black oval in the top right hand corner, hence its existence. They added that to the end just to make you think that the projectionist could actually be someone like tyler durden. I also think its just to make you laugh.
Slow-mo pause ftw.