![Late Show with David Letterman](https://image.tmdb.org/t/p/w300/7dwM8AKyQfauguoQbI1MIlHinLM.jpg)
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.""
- Genre: Talk, Comedy
- Studio: CBS
- Keyword: late-night show
- Cast: David Letterman, Paul Shaffer, Alan Kalter