For UK readers, Michael Epstein's 2010 documentary LENNONYC, known over here as Lennon: The New York Years, has just been repeated on BBC 4 and will be available to watch on BBC iplayer until November 8th. It's well worth watching if you didn't happen to catch it last night.
Even if you did see it you may not be aware of the documentary equivalent of bonus tracks available on the PBS website: the raw audio for ten interviews in which director Michael Epstein can be heard gently prompting - and occasionally prodding - interviewees to talk about matters which, in some cases, they haven't discussed publicly before.