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.

The life and career of conservative icon Barry Goldwater is recounted from his days as an Arizona businessman to his five-term Senate career and his ill-fated run for president in 1964. Produced by the politician's granddaughter C.C. Goldwater, this profile features interviews with a host of media and political luminaries, including Hillary Rodham Clinton, Edward Kennedy, John McCain, Al Franken, Robert MacNeil, Ben Bradlee and others.

Curmudgeon. Contrarian. Misanthrope. Naysayer. For all the people interviewed in this film, someone has used one of the above words to describe them. What have they done to deserve such labels? Everywhere these men and women go, something is being celebrated; they don’t get what all the celebration is about and they’re compelled to question it.

Cologne is the largest city that the G.I.s will take during the war. Nazi propaganda has declared the city to be defended to the last cartridge. Witness the US troops first hand on their advance from the outskirts of the city to the banks of the Rhine and the fascinating research of the Cologne journalist and film historian Hermann Rheindorf.

The Tet Offensive during the Vietnam War, the Civil Rights Movement, the May events in France, the assassinations of Martin Luther King and Robert F. Kennedy, the Prague Spring, the Chicago riots, the Mexico Summer Olympics, the presidential election of Richard Nixon, the Apollo 8 space mission, the hippies and the Yippies, Bullitt and the living dead. Once upon a time the year 1968.

He went off to war an unknown soldier and returned a beloved national hero. Often dismissed as a "do-nothing" president and a good-natured bumbler, Dwight D. Eisenhower -- the last American president to be born in the 19th century -- was actually a skillful politician, a tough Cold War warrior, and one of America's most misunderstood and unappreciated presidents. Two-part documentary from American Experience.