New documentary offers a glimpse into the mind of influential comic Garry Shandling

When influential comedian Garry Shandling died two years ago he was remembered as both a top standup and the creator of two of the most innovative sitcoms in television history. Now, Shandling is the subject of "The Zen Diaries of Garry Shandling," a new HBO documentary by fellow comedian and film director Judd Apatow. Jamie Wax reports.