David Letterman and Joaquin Phoenix Reunite by Free Britney at September 23, 2010 5:04 am. Comments David Letterman and Joaquin Phoenix reunite on The Late Show. It's great stuff. Share Tweet Email Edit Delete Follow David Letterman? Facebook Disqus Star: David Letterman Related Videos: David Letterman Videos Related Post: David Letterman to Joaquin Phoenix: Well?! Uploaded by: Free Britney Uploaded: September 23, 2010