It follows two world-class experts as they compete to best explain seriously complicated concepts to a panel of kids, concepts such as how bad was the eruption of Mt. Vesuvius.

The story of the 1983 America's Cup challenge, where the Australian team financed by business tycoon Alan Bond, finally wrests the cup from the New York Yacht Club, after an unbroken 132 year winning streak.

Each Challenge pits numerous cast members from past seasons of reality shows against each other, dividing them into two separate teams according to different criteria, such as gender, which show they first appeared on, whether or not they're veterans or rookies on the show, etc. The two teams compete in numerous missions in order to win prizes and advance in the overall game.

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Five equally talented candidates. One vacancy. Having journeyed through trying times in their lives, each of them must prove why they deserve the job. Can they rely on their past to help build their future?

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In 1865, the unconquered Matterhorn beckons; former rivals, Italian Carrel and Englishman Whymper, hope to climb it together, but national rivalry intervenes.

In New Tokyo City suicides have spiked, even for the suicide capital of the world. An ex-pat American's been told his ex-girlfriend, a British national, has added herself to the list of recent victims. He returns to the city he loathes to find out why. His past is filled with mistakes and jobs undone. But this time he's determined to finish what he starts. Even if it kills him.

Highly intelligent professor helps solving crimes.

This captivating documentary from the History Channel recounts the development of iconic physicist Albert Einstein's provocative theory of general relativity. Some 200 years after the introduction of Isaac Newton's law of universal gravitation, Einstein rocked the science community with his theory, which suggests that gravity is a warping of space-time caused by the presence of matter.