Conversation so far:
What is the legacy of Harry Nilsson?
Harry Nilsson is the subject of a 2006 documentary, Who Is Harry Nilsson? produced by David Leaf and John Schienfeld.
What happened with Harry Nilsson's film, Who Is Harry Nilsson (And Why Is Everybody Talkin' About Him)?
The film Who Is Harry Nilsson (And Why Is Everybody Talkin' About Him)? was screened in 2006 at the Seattle International Film Festival and the Santa Barbara International Film Festival.
When did Harry Nilsson's film, Who Is Harry Nilsson (And Why Is Everybody Talkin' About Him) go to theaters?
Who is Harry Nilsson (And Why Is Everybody Talkin' About Him?) was released to theatres in September 2010 and on DVD in October that year.

Question: What happened next?
Self-contained rewrite: What happened next with Harry Nilsson's film, Who Is Harry Nilsson (And Why Is Everybody Talkin' About Him) after the early screenings?