Zach Braff, Kathleen Madigan Late Show with David Letterman : Season 9 Episode 164

Mailbag: "Is This Anything?" fave Kiva "Grinder Girl" Kahl stands next to Biff while he puts the pushpins in the map; twelth floor receptionist Art Garfunkel provides his own on-hold music; Alan beats the crap out of an Amish guy, then when Dave explains that the Amish are pacifists, Alan heads back to Lancaster, Pennsylvania, accuses the Amish guy of being brainwashed by Dave, and beats him up again.