Actually Manc Bungy jumping as a 'sport' was invented by Oxford Uni students.
Mr Hackett just hit on the idea of making money from it.
Sky diving is ok pretty much anywhere in NZ as long as you do it with a company that is based at an airport rather than one that an old crop duster in a farmers field.
Hang-gliding, Para-gliding, Luging, sky swings, white water rafting, river boarding all crop up in Queenstown which for me is an bid to hide how dull the place actually is to stay in especially given how expensive and/or restrictive some of the accommodation was when I was there (you want to stay longer than 5 days sir? well you will need to check out and go somewhere else for a couple of days then come back...or use BASE/ YHA on the high street which are twice the price)
Blackwater Rafting in the North island (Waitomo) would be my recommendation followed by walking the Tongariro crossing near Taupo (mid-early spring) and experiencing a proper Mauri Hangi.
South Island is the Milford Sound but at all costs avoid Dundedin & Invercargill.......grim.