Late Show with David Letterman S15 E150 Amanda Peet, Jon Hamm, Augustana

Dave welcomes back Bill Scheft, who was sidelined with hip surgery; Small Town News is interrupted by a guy in a Batman mask; Amanda Peet plugs the "X-Files" sequel; "Mad Men" star Jon Hamm discusses summer trips to Florida; Augustana performed "I Still Ain't Over You."