Four Eyes Fenton's voice isn't the actors the director did all his lines and overdubbed them.
Australia's then Prime Minister Gough Whitlam and his wife, Margaret Whitlam, play themselves in the film. Barry Humphries knew someone who lived in the Lodge (the Prime Minister's official residence), who arranged it.
Nell Campbell's debut.
In Australia, the film was never released on home video (VHS or Betamax). It wasn't until June 2003, when it released on DVD, that Australians had the film on the home entertainment market.