Watch Late Show with David Letterman S15E84 (Season 15 Episode 84)

Watch Late Show with David Letterman S15E84

Al Franken, Lauren Conrad, The Cribs

Dave gives an update on his tick infection; a man from Texas plays "What's In The Soup?" at Hello Deli; Al Franken (D-MN) stumps for his US Senator campaign; Lauren Conrad explains to Dave what a "frenemy" is; The Cribs perform "I'm A Realist.". You can watch Late Show with David Letterman S15E84 here.