Authorities praise well-behaved New Year's Eve revellers despite a hit-and-run south of Perth, as a woman remains in a critical condition in hospital after a firework exploded in her face in Bunbury.

He is not a super hero, but former dolphin trainer Duncan Jones has the power to shut down city streets so Hollywood superstars can shoot their blockbuster movies.

Three Melburnians are injured by illegal fireworks and a teenager falls from a school rooftop while trying to watch the city's display, but police praise the behaviour of most revellers.

Police praise the behaviour of partygoers around the country who gathered to ring in 2018, with celebrations in Sydney hailed as a success after more than 1 million people descended on the Harbour foreshore for a fireworks extravaganza.

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