Though it plays hell with cameras, Antarctica has long fascinated filmmakers. This hour-long National Film Unit documentary was assembled from a five-part TV series of the same name. There are looks at scientific research, early explorers, and Antarctica's affect on global climate. Made four decades ago, the programme warns of a possible "new and potentially dangerous warming period", and calls the greenhouse effect a "controversial scientific theory". The large cast includes penguins, a seal birth (clip two) and a heavyweight team of Kiwi scientists.

Charting the freeze and thaw which transforms Antarctica each year, this NHNZ documentary follows an icebreaker as it manoeuvres towards the permanent polar ice cap — the furthest south any ship has yet ventured in winter. The cold has trapped icebergs in frozen seas, as well as 25,000 male emperor penguins, waiting out the three month polar night. Veteran Antarctic filmmaker Mike Single showcases eerie undersea environments, icebergs in beautiful decay, the towering Ross Ice Shelf, seals and a massive summer explosion of krill. Single won an Emmy award for his footage.