Comedy Videos Letterman Stand-Up Comedy Spotlight: Tim Harmston Watch comedian Tim Harmston’s performance on “Late Show with David Letterman.” ByStage Time Published Jul 25, 2011 Flipboard Reddit Pinterest Whatsapp Whatsapp Email Watch comedian Tim Harmston’s performance on Late Show with David Letterman. In this article:Comedy Videos, performing stand-up comedy, Tim Harmston, TV shows Advertisement Flipboard Reddit Pinterest Whatsapp Whatsapp Email Advertisement