Launched on 5 April 1976, Winners & Losers heralded a new age in Kiwi screen drama. Indie talents Roger Donaldson and Ian Mune based their tales of success and failure on New Zealand short stories, after managing to negotiate funding from various government sources. Then the pair took the series to Europe, proving there was strong overseas demand for Kiwi stories. In the backgrounders, Mune recalls the show's origins. There are also pieces on its place in local screen history, and its 2018 restoration. Plus watch two video interviews on the series.

NZ On Screen’s Dunedin Collection offers up the sights and sounds of a city edged by ocean, and famed for its music. Dunedin is a bracing mixture of old and new: of Victorian buildings and waves of fresh-faced students, many of them carrying guitars. As Dave Cull reflects in his introduction, it is a city where distance is no barrier to creativity and innovation.

He learnt kapa haka as a child. He learnt to smoulder on Shortland Street. He punched a country in the guts with Once Were Warriors. Temuera Morrison has starred in Māori westerns, adventure romps, and cannibal comedies. In the backgrounder to this special collection, NZ On Screen editor Ian Pryor traces Temuera Morrison's journey from haka to Hollywood.

In the beginning — of both movies and books — is the word. Many classic Kiwi films and television dramas have come from books (Sleeping Dogs, Whale Rider); and many writers have found new readers, through being celebrated and adapted on screen. This collection showcases Kiwi books and authors on screen. Plus check out booklover Finlay Macdonald's backgrounder.

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.

This documentary heads to the Southern Ocean to explore New Zealand’s subantarctic islands. The Antipodes, Bounty, Snares, Campbell and Auckland Island groups are remote outposts between Aotearoa and Antarctica, home to vital breeding grounds for millions of seabirds and marine mammals – from penguins to sea lions and albatrosses – plus unique plants like giant tree daisies. Director Conon Fraser also looks at human efforts to live there from whaling depots, to the short-lived Hardwick Settlement. The hour-long NFU film is narrated by Ray Henwood (TV's Gliding On).

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.

Naturalist Ramari Stewart never tires of the view from a subantarctic hut. "This is the only place I know where I can see a whale out my window and it’s never let me down." The documentary follows Stewart as she spends a summer and winter monitoring wildlife at remote Northwest Bay in Campbell Island. Southern right whales, Hooker's sea lions and elephant seals all feature. Stewart, who later became a whale expert, displays a jaw-dropping bond with the animals. At the end of the programme, the whales cause a stir when they play perilously close to Stewart's boat.

Rosemary (Annie Whittle) is a photographer, mother and middle-distance runner. A project photographing the rare yellow-eyed penguin sends her to a remote Otago cottage. Despite menacing happenings, she refuses to be intimidated. Then events escalate, sending her running for help in the race of her life. Bird-watching, stranger danger and feminist film theory line up for a time trial in Melanie Read's first movie, for which 20 of the 29-strong production crew were women. Marathon champ Allison Roe — who trained Whittle off-screen — makes a brief cameo.

The first episode of Ice Worlds explores animal life at the poles, both North and South. At the North Pole American scientist Steve Amstrup tracks polar bears, from their hibernation during winter, to seeking food out on the tundra during summer. Down south, Antarctica's emperor penguins are studied by Gerald Kooyman, physiologist Arthur Devries catches Antarctic cod, and biologist Brent Sinclair seeks the continent's largest land animal — a tiny insect called a springtail. Ice Worlds was narrated by former news anchor Dougal Stevenson.