Director Luc Jacquet's disarmingly simple nature documentary follows a flock of emperor penguins as they make the arduous journey to their annual breeding ground, and then endure the Antarctic's extreme winter until their chicks are hatched. The avian protagonists' comical ungainliness on land and deadpan manner make for adorable viewing, while the austere, glacial landscape is consistently breathtaking. The film's own backstory is perhaps even more fascinating. Originally, it had a soppy dialogue track in which French actors voiced the penguins' "thoughts". Fortunately, the US version (released in here in the UK) ditches most of the anthropomorphism in favour of a drier, factual narration by Morgan Freeman, which marvels at the penguins' stamina, dedication as parents, and serial monogamy. These qualities have led to the film being championed - and perhaps misinterpreted - by some US commentators keen to promote the anti-evolutionary theory of "intelligent design". But such controversy should not be allowed to detract from this movie's wide-ranging appeal or its startling box-office success.

Every year, thousands of Antarctica's emperor penguins make an astonishing journey to breed their young. They walk, marching day and night in single file 70 miles into the darkest, driest and coldest continent on Earth. This amazing, true-life tale is touched with humour and alive with thrills. Breathtaking photography captures the transcendent beauty and staggering drama of devoted parent penguins who, in the fierce polar winter, take turns guarding their egg and trekking to the ocean in search of food. Predators hunt them, storms lash them. But the safety of their adorable chicks makes it all worthwhile. So follow the leader... to adventure!!