Between bookings from U2 to Bruce Springsteen, Fallon, Questlove and Jonathan Cohen reveal how they turned late night into one of music's hottest stops
Little-known fact: Before he had his own NBC talk show or landed a gig with "Saturday Night Live," Jimmy Fallon appeared on a late-night program. The year was 1980-something. The show: "Letterman." Sitting in the audience, the perennially psyched Fallon says "the camera panned by me as I was in the crowd. And. I. Freaked. Out. I told everyone to watch." It was hard to miss him: "I was screaming and waving my hands." But just in case you did, he videotaped it and would replay it for anyone who'd watch -- in slow motion, "a blur of a human, waving."