So many great movies listed here, but only one kiwi movie; Once Were Warriors. Unless you count Lord of the Rings, which was indeed made here, but not really exactly a kiwi movie. Here's a few I reckon are worth checking out, a mix of comedy, fantasy, sci-fi and biopic, with at least one film from each other last 5 decades;
Goodbye Pork Pie (the 1981 original, I haven't seen the 2017 remake Pork Pie directed by his son)
Came A Hot Friday (1985, so underrated compared to the one above)
The Quiet Earth (1985, based on the 1981 novel of the same name)
The Navigator: A Medieval Odyssey (1988, epically weird, in a Fisher Kind kind of way)
Heavenly Creatures (1994, Peter Jackson's first "serious" film, after his splatter comedies Bad Taste, Meet the Feebles and Braindead. Trivia: I'm in this for about 3 seconds ...)
Whale Rider (2002)
The World's Fastest Indian (2005)
Eagle vs. Shark (2007)
Hunt for the Wilderpeople (2016)
The Dead Lands (2014, notable for being entirely in Te Reo Māori, and featuring some mean Māori martials arts)
The Dark Horse (2014)
Muru (2022, loosely based on the events of the 2008 Operation 8 raids)
Ka Whawhai Tonu (2024, also has a lot of Te Reo spoken)
Gah. Quiet Earth! I still love this movie and it has some unforgettable scenes. Also the most memorable ending shot of a sci-fi movie. It was my background on PC for years.