Two stoner lab assistants get high on science, literally, by smoking various topics from a robotic bong to blast off to imaginary realms full of real facts and mind-blowing insights.

A dysfunctional couple head to a remote lakeside cabin under the guise of reconnecting, but each has secret designs to kill the other. Before they can carry out their respective plans, unexpected visitors arrive and the couple is faced with a greater danger than anything they could have plotted.

Nearly 40 shark species live in the warm waters of Hawaii's volcanic islands, including white tip reef sharks, Galapagos sharks and tiger sharks.

A clash of true oceanic titans sees fights in the remote battlefields of Ascension Island. Tuna are often faster, fitter and bigger than the sharks.

In honour of the 15th Anniversary of 9/11, National Geographic Channel is looking back at the very best reporting we have done since this world-changing tragedy first happened using extended excerpts from past specials that relate directly to events leading up to and following the attacks on New York City and Washington DC.

A visually stunning portrait of one of nature's most agile and fearsome predators, the Goshawk. This secretive bird of prey can be hard to see in the UK, but reigns supreme in Korea's mountains.

If the world as you know it falls apart, will you rise up to fight? This one-hour documentary follows citizen militia, survival and prepper groups in Arizona, Florida and Indiana who are preparing for the worst. After what they consider to be inadequate government responses to tragedies like Hurricane Katrina, these groups believe that disaster will strike - and they must be ready to protect themselves and restore order.

A look at the classic film Jaws and what happened in the swell after the movie.

In 6,000 B.C., 8,000 years before the 2004 Indian Ocean tsunami, waves taller than the Statue of Liberty ravaged the coasts of the Mediterranean Sea, devastating ancient villages and killing untold numbers. Watch as a team of scientist's piece together evidence of this mega storm and reveal the face of this ancient tsunami for the first time.

Was Adolf Hitler influenced and motivated by the occult? Through the years, historians have debated the mysterious connection between the occult, Hitler and the Nazi party, including some who maintain that Hitler killed others to keep his occult beliefs a secret. NGC examines how Hitler's involvement with the German Worker's Party brought him face-to-face with occultists who may have influenced his beliefs.

Chef Ramsay attempts to do the impossible: turn one ordinary and empty restaurant into the most popular, sought-after venue in town. There's no time for polite small talk as he embarks on his mission to turn around the fortunes of each restaurant in just one week and save them from their living nightmares.

Ancient rivalry, conflict between brothers and a tale of murder and punishment, but how does the Koran's version of Cain and Abel differ from that of the Old Testament?

Discovery Channel presents a never-before-seen breakdown of a shark bite. Actual footage of behavioral scientist Erich Ritter's 2002 shark bite.

There is a mystery there and the answer lies somewhere between Bermuda, Puerto Rico and Miami. Hundreds of boats and planes have disappeared in the ocean with little or no trace at all. Most of these cases can be explained quite easily by human error or bad weather. But there are some that defy all explanation. Theories abound on these causes: Aliens, massive gas eruptions and freak waves. The documentary reveals that the boats and planes face a real danger in a triangle, but the true threat is often as strange as the wildest theory.

A look at the FBI profiling computer, which can take details of seemingly disparate murders across the US and analyse them to see if there are any connections. This ingenious technology has ensured that numerous serial killers have been apprehended and sentenced.