Ricky Gervais Does His Best to Explain Karl Pilkington's Idiocy 5.15K Whitney Jefferson 04/01/10 12:22PM Filed to: The Late Show The Late Show Ricky Gervais David Letterman Karl Pilkington TV Video Ricky came on Dave's show to promote The Ricky Gervais Show and immediately the conversation turned to the stupidity of the show's star, Karl. Ricky explains the genius to Karl and what it's like to deal with someone that daft.