Chris Cole is wearing a T-shirt that says: "Save our beach. Stop the smelter." This refers to the late 1970s proposal to build an aluminum smelter at Aramoana, which would have destroyed the township and threatened a local wildlife reserve, and met with a lot of resistance from residents.
When David Gray is tuning the radio, we can briefly hear: the 1984 song "Pink Frost" by Dunedin band The Chills, 4XD Gold, the former name of Radio Dunedin, and David Lange, Prime Minister of New Zealand until 1989.