Riddled with old military tunnels, Auckland’s North Head has long been the focus of speculation. In this documentary Philip Alpers explores theories that a hidden tunnel network contains tonnes of decaying ammunition — and two old Boeing airplanes. Archeologist Dave Veart sets about finding the truth. The man responsible for closing the tunnels says there's nothing there; others recall seeing a plane. Filmmaker John Earnshaw is convinced of its existence. Earnshaw would spend years battling the crown in court, over claims of a breached agreement to search North Head.

This Betchadupa video opens with frontman Liam Finn performing in a recording studio; the other band members are soon revealed playing to unusual, sometimes unprepared audiences. Drummer Matt Eccles plays an impromptu gig in a lift, Chris Garland entertains boogying kindergarteners with his guitar, and Joe Bramley on bass harasses shoppers in a cinema foyer. By the end, the band are back together. Taken off Betchadupa's self-titled EP, the catchy track was nominated for a 2000 Silver Scroll songwriting award. Lead singer Finn was around 16 at the time.

Shot in alternating colour and moody black and white, this is a straightforward music video: cutting together a wahine washing her hair in a basin, with the band performing on a garbage strewn wasteland, slo-mo strolling along a city street, and singer Che Fu (Chicago White Sox cap and duffle coat) wandering a wintry North Shore beach. Director and band member Joe Lonie captures lively performances from the band's multiple members, to help bring the clip to life.

Outrageous Wellington rockers Head Like a Hole (aka HLAH) formed in 1990, taking their name from a Nine Inch Nails song. Masters of excess, they quickly made a name for themselves via unhinged live performances (not to mention a casual attitude to clothes on stage).  Sharing management, a record label and one obscure recording with Shihad, HLAH split in 1998 after four albums, in a state of disarray. After reforming for the 2009 Homegrown festival, further releases followed. Swagger of Thieves, a documentary on the band, that was a decade in the making, premiered in July 2017.

'No 8 wire' Kiwi ingenuity is defined by problem solving from few resources (No 8 wire is fencing wire that can be adapted to many uses, an ability that was particularly handy for isolated NZ settlers). Embodied in heroes from Richard Pearse to PJ, Kiwi ingenuity is a quality dear to our national sense of self. It has been memorably celebrated, and sometimes satirised, on screen.

It's hard to reduce legendary band Split Enz down to a single sound or image. Soon after forming in 1973, they began dressing like oddball circus performers, and their music straddled folk, vaudeville and art rock. Later the songs got shorter, poppier and — some say —better, and the visuals were toned down...but you could never accuse the Enz of looking biege. With Split Enz co-founder Tim Finn turning 65 in June 2017, this collection looks back at one of Aotearoa's most successful and eclectic bands. Writer Michael Higgins unravels the evolution of the Enz here.

On 8 June 1987 Nuclear-free New Zealand became law. This collection honours the principles and people behind the policy. Prime Minister Norman Kirk put it like this: "I don't think New Zealand's a doormat. I think we've got rights — we're a small country but we've got equal rights, and we're going to assert them." In the backgrounder, journalist Tim Watkin explores the twists and turns of Aotearoa's nuclear history.   

It's the holidays: time to let your hair down, have a swim, give in to your appetite...and have a boogie. From Kings to The Clean, from 'Ten Guitars' to 'Trippin', let NZ On Screen supply the music, with this epic playlist of classic Kiwi party songs. In the backgrounder, music fan and publicity maestro Nicky Harrop takes us through the tracks, before bidding adieu to NZ On Screen.

NZ On Screen's Car Collection is loaded with vehicles of every make and vintage, as a line-up of legendary Kiwis get behind the wheel — some acting the part. The talent includes Bruce McLaren, Scott Dixon, Bruno Lawrence, a clever canine, and a great many bent fenders. Onetime car show host Danny Mulheron tells tales, and picks out some personal favourites here.