Late Show with David Letterman S15 E84 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."