Late Show with David Letterman S12E14 · Ray Romano, Avril Lavigne

Late Show with David Letterman

Season 12 · Episode 14 · Ray Romano, Avril Lavigne

Biff spends the day at New York-Presbyterian Hospital with Dr. Lou Arrone; an educational segment with Alan and an animated rodent goes awry; Ray Romano talks about the final season of ""Everybody Loves Raymond;"" Avril Lavigne performs ""My Happy Ending.""