The Vietnam War

An acclaimed series of biographies of artists, writers, filmmakers, musicians and Hollywood stars. Profiles of Alexander Calder, Paul Simon, Charlie Chaplin and music producer John Hammond won Peabody Awards, while films about Edward R. Murrow, Lucille Ball, Buster Keaton, Lillian Gish and Leonard Bernstein (among others) won Emmys, and a study of the Algonquin Round Table won a 1987 Academy Award.

Scientists seek to uncover celebrated mysteries of the past in this occasional British series.

Independent filmmakers are spotlighted in this anthology series, which concentrates on documentaries, but occasionally features artist profiles and offbeat fictional films.

Natural-history series featuring gifted wildlife documentarians and stunning photography.

A science-documentary series that demystifies a vast range of science, technology and history topics.

The family histories of well-known Americans are unearthed with genealogical and genetic tools.