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 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.

Feeling lost in his day-to-day existence, Red has trouble making a decision that could potentially change his life.

With the accidental discovery of a lethal bio-agent at her research facility, Dr. Christine Ruben decides to double cross her own government by stealing the deadly formula to keep it out of the clutches of the military, whom she doesn't trust. To make her rendezvous with some confederates who promise to get her out of the country, she recruits daredevil driver Judd Pierson and his partner Casey Lee, who are down on their luck and take the job without knowing what they're getting into.

In the deep interiors of New Zealand, is a forest. A sacred land where the native flora and fauna of the land has found their last refuge. This is the story of the land's residents, as experienced by them.

Walter Burton's realistic photographs depicting poor treatment of Maori prisoners are rejected by late 19th century government officials. Walter is condemned to making a living from everyday studio work, the frustration of which is apparently quite sufficient to make him a drunk. His brother Alfred is happy to take the photos that the officials want and therefore gets the commissions. Alfred's photos are well received, but when Walter shows his own photos, toughs are sent around to smash up his plates.

The Indonesian archipelago in the Indo-Pacific Ocean comprises thousands of islands, atolls and the largest concentration of coral reefs in the world. This rich and varied environment is a product of a unique set of natural circumstances.

The Indonesian archipelago in the Indo-Pacific Ocean comprises thousands of islands, atolls and the largest concentration of coral reefs in the world. This rich and varied environment is a product of a unique set of natural circumstances. The equatorial sun powers ocean currents among the tiny dots of land. Where the archipelago meets the western tip of New Guinea an intersection of ocean currects creates perhaps the world's richest reefs - in the region of the Rajah Ampat Islands. A coral reef houses a myriad of colors, shapes and patterns: from the bulb tentacle anemone which protects, and in turn is protected by, the brightly coloured clownfish; to the multi-branched gorgonian, home of the tiny pygmy seahorses.

A docu-drama covering one of the most famous cases in New Zealand history, the murder of Harvey and Jeanette Crewe in 1970.

Monica arrives back from her big overseas experience to find her boyfriend Nick unchanged. Although Nick styles himself an artist, he is really something of a cultural redneck, and when the couple head up north for a break, and they meet up with Riki, a poet, who is rather less shallow and charming.

In the Southeastern-most part of Germany, rises Mount Watzmann. This mighty peak is a stone guardian of a remarkable wild region that holds tight to its secret nature. There are more secrets to reveal where the mountains disappear into the depths of Lake Königssee, a lake that holds a stark resemblance to a fjord at the coasts of the Atlantic ocean. Underwater, fossil marine creatures in limestone rock tell of an ancient seabed, buried deep then heaved skywards by battling tectonic plates. Deep grooves and gouges in the rock were left by an ice age glacier, more than one kilometer thick as it chiseled its way down the valley. Though the ice age ended 12,000 years ago, the mountains still carry echoes of that frozen past. "Echoes of the Ice Age" is a portrait of the wildlife in this breathtaking scenery of the Berchtesgaden Alps.