On this week's episode of Paul Shaffer Plus One, Graham Nash joins Paul Shaffer and reveals how he met David Crosby and where their relationship stands today.

On this week's episode of Paul Shaffer Plus One, Paul is joined by ZZ Top lead singer, Billy Gibbons. Gibbons discusses working with the iconic Jimi Hendrix, how the blues influenced his music, and the two play a Muddy Water's cover from his latest solo album, "The Big Bad Blues."