Probably the ultimate One Hit Wonder as far as NZ music goes … OMC (Otara Millionaires Club – a tongue-in-cheek reference to Otara’s status as one of the poorest suburbs of Auckland). You might have actually heard of this one – it did quite well internationally. Looking on Wikipedia, I see that is reached number 1 in the US, Canada, Australia and, of course, in New Zealand. Unfortunately, leader singer Pauly Fuemana died in 2010 after various health issues.
Of course, it was also ripped off in the form of the song “Stole My Car”: