During EO's last run, my friends and I went to Disney Land out of our minds on acid. We figured out that if we stayed in our seats after it was over we could watch it again. I was too scared to try this when I was younger but with acid it worked! We did this for about an hour then we would trip over to the People Mover. I own a bootleg copy now and I even set up a fog machine under the screen for when their space ship crashes. Walla, self induced flashbacks for all!
I only saw this once, in 1987. I got some kind of visor with lights on it, though. And I still love "Another Part of Me" which was the song that played in the movie, I think.