He invited the man to his show to talk about his new movie. But he never imagined the mess he would get himself into. David Letterman had an encounter with Crispin Glover. The actor appeared in an outrageous outfit and spoke using strange tics. The host soon got more and more uncomfortable. Not knowing this was all an elaborate plan. Follow us on our YouTube channel: https://bit.ly/yt-upsoclicons | Icons