Watch the full documentary about the celebrated rock band.

David Geffen’s far-reaching influence — as agent, manager, record industry mogul, Hollywood and Broadway producer, and philanthropist — has helped shape American popular culture for the past four decades. Notoriously press and camera-shy, Geffen reveals himself for the first time in the new two-hour documentary; premiering nationally on Tuesday, November 20, 2012 on PBS (check local listings).

Watch the full documentary about the iconic host of NBC's The Tonight Show.

Conan O’Brien and Tonight Show guests Mel Brooks, Dick Cavett and Steve Martin, comment on Carson’s brilliant interview style, his master comedic timing, and the joy of cracking Carson up.

Carl Reiner, Bob Newhart and Garry Shandling discuss the strained and complicated relationship Johnny Carson had with his mother, Ruth, and how it may have affected Carson and his career.

A look at the complicated relationship between Johnny Carson and his Tonight Show sidekick Ed McMahon.

Read about the evolution of the man who would host The Tonight Show for over 29 years.

Jerry Seinfeld and Garry Shandling talk about the time they went out to dinner with Johnny and discussed the unpredictability of show business.

Doc Severinsen talks about when he made some sartorial changes after becoming the leader of The Tonight Show band and Johnny's reactions to his eccentric outfits.