This popular 1970s TV talent show screened on TV2. It was hosted initially by broadcaster Rhys Jones (Town and Around), then Brit import Robin Stewart (Bless This House). Singer Annie Crummer first won attention after competing as a nine-year-old. Opportunity Knocks had many similarities to a long-running English show of the same name (including a clap-o-meter), devised by Hughie Green. In 1989 Green (unsuccessfully) sued the Broadcasting Corporation of NZ over format infringement. After going to the Privy Council, it became a landmark copyright law case.