I ask him about Living in the Material World, Martin Scorsese's new, almost four-hour documentary about the life and times of George Harrison.

His nearly four-hour 1996 documentary about the company, which was founded in Paris in the late 17th century, described in detail its work behind the scenes.

That is a central question of "Divided Memories," a probing and often affecting four-hour documentary that begins tonight on PBS.

The four-hour documentary examined rumors and accusations about the assassination of President John F. Kennedy.

One memorable contribution was a four-hour documentary on Africa, which cost an unheard-of $2 million and for which he served as associate producer and writer.

Scorsese still found time for a four-hour documentary in 1995 offering a thorough trek through American cinema.

The four-hour documentary, which caps 10 years of work, is to be broadcast nationally on Sept. 3 and 4 on PBS.

In this period she also made Il giorno della pace, a four-hour documentary on immigration south-to-north within Italy.

The idea for "Lincoln" began with the photographs, and they remain the strongest elements in a four-hour documentary that only occasionally reaches its potential.

I have been laid up for 10 days with the flu and I can tell you, it puts you in no mood to watch a four-hour documentary on Nixon.