The Late Show with David Letterman - June 1, 2009
While Conan makes his debut on the Tonight Show, David's mom still thinks her son should have gotten the gig.
Sonia Sotomayor's pronunciation roundup
Top Ten surprising facts about Sonia Sotomayor
Carpenter ants should build tree houses.
Dave informs the world that, many years ago, Conan O'Brien killed a guy.
Dave warns North Korea, "Hey, knock it off."
Guests: venerable comedian Bill Cosby, 3-time champion of the Indianapolis 500 Helio Castroneves, and sultry jazz singer Melody Gardot