Showtime's "In the 20th Century" is a millennium-related strand of feature-length documentaries in which famous directors take on major subjects of their choosing. In the third of the six films, "Yesterday's Tomorrows," filmmaker Barry Levinson delves into what we, as Americans, thought the future would be as we traveled through the 20th century. Houses and cars of the future, the promise of technology, and the other hopes and dreams of the early part of the century gave way to the fears and anxieties brought about by the atomic age and the Hollywood disaster films that followed. Soon we wondered if we could control technology, or if it would control us. This film is by turns light-hearted and thoughtful, and rare historical and archival film, produced by government and industry, alternates with on-screen interviews with people as diverse as consumer advocate Ralph Nader, cartoonist Matt Groening, futurist Alvin Toffler, comedienne Phyllis Diller, and actor Martin Mull.

Emerging from rural Ireland, Edna O’Brien broke multiple taboos with her sexually provocative literature and equally adventurous love life. Here, she opens up about her past with additional perspectives offered by Gabriel Byrne, Walter Mosely, and others.

A documentary on the life of Jack Kirby, co-creator of Captain America, The Fantastic Four, Iron Man, Thor, The Avengers, The Hulk, The X-Men and the New Gods, among other classic comic book superheroes.

Years after his squad was ambushed during the Gulf War, Major Ben Marco finds himself having terrible nightmares. He begins to doubt that his fellow squad-mate Sergeant Raymond Shaw, now a vice-presidential candidate, is the hero he remembers him being. As Marco's doubts deepen, Shaw's political power grows, and, when Marco finds a mysterious implant embedded in his back, the memory of what really happened begins to return.