8.3The Life of Birds (1998)
David Attenborough's comprehensive and richly detailed study of birds.

7.4Aliens of the Deep (2005)
James Cameron teams up with NASA scientists to explore the Mid-Ocean Ridge, a submerged chain of mountains.

6.7Arctic Tale (2007)
Following the life of some arctic creatures to illustrate the harsh realities of existence in the Arctic.

6.2Planet in Peril (2007)
CNN anchors Anderson Cooper and Sanjay Gupta report on global issues from 13 countries around the world.

7.1Sea Monsters: A Prehistoric Adventure (2007)
Brings to life some of the most bizarre, ferocious and fascinating creatures to ever inhabit the ocean.

7.4Sharkwater (2006)
Award winning documentary about the life of sharks and the brutality of the shark fin industry.

8.9Ansel Adams (2002)
Ansel Adams' images of the American West changed forever what Americans thought about their own land.

8.5Touching The Void (2003)
The true story of two climbers and their perilous journey up the west face of Siula Grande in the Andes.

7.9The Wild Parrots of Telegraph Hill (2003)
The true story of a bohemian and his remarkable relationship with a flock of wild red and green parrots.

8.2Prehistoric Park (2006)
Scientist travelling back in time to find some of the most magnificent creatures that have ever lived.

9.1Microcosmos (1996)
A documentary of insect life in meadows and ponds, using close-ups, slow motion, and time-lapse photography.

7.5Jurassic Fight Club: Season One (2008)
Jurassic Fight Club depicts how prehistoric beasts hunted their prey.

8.3Koyaanisqatsi (1982)
koy.aa.nis.qat.si (Hopi) [n] 1. crazy life 2. life out of balance 3. life disintegrating 4. life in turmoil

7.6The Living Sea (1995)
A survey of the world's oceans, emphasizing the fact that it's a single interconnected ocean.

7.5Coral Reef Adventure (2003)
Documentary exploring and capturing on film the dazzling underwater world of coral reefs.

8.9Gates of Heaven (1978)
A documentary about a pet cemetery in California, and the people who have pets buried there.

7.9Walking with Monsters - Life Before Dinosaurs (2005)
A documentary about life before the dinosaurs.

8.3Walking with Dinosaurs (1999)
Documentary-style series about the era of the dinosaurs, mixing real locations and CGI.

9.5Trouble the Water (2008)
An aspiring rap artist and her husband, trapped in New Orleans floods, show what survival is all about.

8.7Encounters at the End of the World (2007)
This documentary depicts Antartica like it never seen before.

8.9Grizzly Man (2005)
Explores the life and death of amateur grizzly bear expert Timothy Treadwell.

7.0Flow: For Love of Water (2008)
'Flow' confronts the disturbing reality that our most crucial resource is dwindling.

7.0The 11th Hour (2007)
The state of the global environment and practical solutions for restoring the planet's ecosystems.

6.6Life After People (2008)
If humans were suddenly to disappear, what would happen to our planet?

7.0Mystery of the Nile (2005)
A team of explorers navigate the Nile from source to sea.

8.2An Inconvenient Truth (2006)
A documentary on Al Gore's campaign to make the issue of global warming a recognized problem.

8.9Winged Migration (2001)
Documentary on the migratory patterns of birds, shot over the course of three years on all seven continents.

7.8How the Earth Was Made (2007)
A brief account of the Earth's geological progression, from its creation to its demise in 2.5 billion years.

8.5March of the Penguins (2005)
A look at the annual journey of Emperor penguins as they march to their traditional breeding ground.

9.8The Blue Planet - Seas of Life (2001)
The Blue Planet reveals the sea and its communities at their most fearsome and alluring.

8.6Baraka (1992)
Stunning visuals from all corners of the world.

9.5Planet Earth (2006)
40 cameramen, 200 locations, shot entirely in HD, this is the ultimate portrait of our planet.

8.5Galapagos (2007)
The inspiration for Darwin's theory of evolution, the Galapagos Islands are a living laboratory.

9.0Life in the Freezer (1993)
Series exploring the natural history of Antarctica.

N/AChased by Dinosaurs (2003)
Once we were walking with them. Now they're chasing us.

N/AAftermath: Population Zero (20058)
A documentary on what the Earth would be like if humans disappeared.

N/AAustralia: Land Beyond Time (2002)
This film explores Australian life right from the very beginning to the present day.

N/AAbove All Else: The Everest Dream (1999)
Above All Else is the story of Alan Hobson and Jamie Clarke's third and final attempt to scale the Everest.

N/AOceans (2008)
From the Caribbean to Arctic, an international team of underwater explorers reveal the secrets of our oceans.

N/ACharles Darwin And The Tree of Life (2009)
This fascinating documentary, hosted by David Attenborough, uncovers the life and work of Darwin.

8.5Africa: The Serengeti (1994)
There is a place on Earth where it is still the morning of life and the great herds still run free.

8.3Alaska: Spirit of the Wild (1997)
A look at the Alaskan wilderness throughout the year, from the harsh winters to the rejuvenating spring.

9.0Allosaurus - A Walking with Dinosaurs Special (2001)
A Walking with Dinosaurs Special centering on one particular dinosaur, dubbed Big Al.

7.0The Human Footprint (2007)
Examining the amount of products consumed in a lifetime and the impact it has on the environment.

N/ALife in Cold Blood (2008)
The epic story of the most successful animals ever to walk on land – reptiles and amphibians.

N/ALife in the Undergrowth (2005)
Vast in number, yet often too small to be noticed: the invertebrates.

9.7The Life of Mammals (2002)
David Attenborough's comprehensive study of how a remarkable group of animals evolved.

7.6Earth: The Biography (2007)
The life story of our planet, how it works, and what makes it so special.