
Late Show with David Letterman - Season 20 Episode 170 Stephen Colbert; Sir Ian McKellen; Chvrches
From "The Colbert Report", host Stephen Colbert; from "The Hobbit: The Desolation of Smaug", actor Sir Ian McKellen; musical guests Chvrches.
- Genre: Talk, Comedy
- Studio: CBS
- Keyword: late-night show
- Cast: David Letterman, Paul Shaffer, Alan Kalter