Showtime's "In the 20th Century" is a millennium-related series of feature-length documentaries in which famous directors take on major subjects of their choosing. In the fourth of the six films, "The Pursuit of Happiness," filmmaker Robert Zemeckis delves into the history of America's relationship with mind-altering substances over the past 100 years, presenting interviews with historians and professionals in the drug treatment field, interspersed with a treasure trove of film and television clips depicting the highs and lows of smoking, drinking and drugging in the 20th century

Showtime's "In the 20th Century" is a millennium-related series 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.

Showtime's "In the 20th Century" is a millennium-related series of feature-length documentaries in which famous directors take on major subjects of their choosing. In the fifth of the six films, "Funny Is Money," filmmaker Norman Jewison delves into the topic of comedy, using the hype surrounding the finale of the wildly successful NBC series "Seinfeld" as his launchpad to explore how the artform has evolved over the past 100 years.

Showtime's "In the 20th Century" is a millennium-related series of feature-length documentaries in which famous directors take on major subjects of their choosing. In the first of the six films, "In Search of the Happy Ending," filmmaker Garry Marshall delves into the institution of marriage as it has evolved in America throughout the past 100 years.

Showtime's "In the 20th Century" is a millennium-related series of feature-length documentaries in which famous directors take on major subjects of their choosing. In the last of the six films, "The American Tapestry," filmmaker Gregory Nava takes viewers on an uplifting and challenging journey through the memoirs of five immigrant families, each one on a quest for its own American Dream. Beautifully interweaving accounts from several generations, Nava composes an astonishing tapestry of personal triumphs and tragedies, as each story of courage unfolds. The American Dream is an elusive thing, and the lives of the people in Nava's film are both triumphant and tragic, teeming with optimism and sometimes despair. They expose the finest and worst in America as well as what we feel most magnificent and dreadful. They are part of the many contrasting threads that make up the American tapestry — a complex portrait of a nation at the turn of the millennium.

Showtime's "In the 20th Century" is a millennium-related series of feature-length documentaries in which famous directors take on major subjects of their choosing. In the second of the six films, "From Behind Closed Doors," filmmaker Robert Townsend delves into America's fraught relationship with sex and sexuality, using New York's Times Square as the focal point as he traces 100 years of sexual mores and practices.