david letterman

“You realize this is being broadcast, don’t you?”

Shaffer was the host's bandleader for over 30 years, but at first he said no.

His move from rival NBC changed the landscape of late-night television.

Film follows late-night host on a trip to Dublin, where Bono and the Edge deliver a live performance and discuss friendship.

Among other questionable topics, he even asked her what she ate for every meal while in jail.