Unlike previous documentaries about the topic, this feature by Jethro Senger tries to capture the essence of the music and the lifestyle associated with it.

The executives introduce him to Yates's work by showing an excerpt from his previous documentary, The Last Road to Hell.

This was a follow up to a previous documentary special he produced on Nostradamus in the late 1970's.

Stern and Sundberg's previous documentary was Joan Rivers: A Piece of Work.

The executive producer for his previous documentary had been a Lebanese millionaire whose head had been permanently enveloped in a cloud of blue cigar smoke.

In previous documentaries and programmes Baxter had avoided addressing such questions about Sundin's involvement in the programme.

It is a sequel to his previous documentary, Soundtrack to War.

The other five users from the previous documentary have made appearances with updated details.

Ms. Romand's previous documentary, "Mix-Up," was about the families of babies who were switched in the hospital.

The title is a play on words on Guggenheim's previous documentary, An Inconvenient Truth.