Late Show with David Letterman - Season 20 Episode 55 Matthew McConaughey; Ryan Lochte; Steve Earle & The Dukes (& Duchess)
From "Mud", actor Matthew McConaughey; Olympic swimmer Ryan Lochte; musical guests Steve Earle & The Dukes (& Duchess).
- Genre: Talk, Comedy
- Studio: CBS
- Keyword: late-night show
- Cast: David Letterman, Paul Shaffer, Alan Kalter