Harry Potter and the Half Blood Prince, Nine, 7.30pm
How much have Nine promoted this – the first free to air broadcast of The Half Blood Prince? Harry returns to Hogwarts for his sixth year, to face a growing danger from Lord Voldemort and his supporters, which may be more than a match for his strengthening powers as a wizard.
The Biggest Loser (US), ELEVEN, 8.30pm.
With the finale airing next weekend, we are at the (pardon the cliché) business end of the competition. The contestants are put to the test in a trivia competition that tests both their food and fitness knowledge. The winner will receive an all-expenses paid trip to New York.
Engineering Connections: The Space Shuttle, SBS ONE, 7.30pm
How many shows does this guy do!?!? Richard Hammond explores the ingenious design secrets of NASA’s space shuttle. He demonstrates the cooling system that keeps the shuttle’s engines from exploding, uses a wall of water to guard against the destructive power of sound waves, and explains how features found in cannonballs, tram tracks and camera irises help the shuttle successfully complete its missions.
Police Academy 5: Assignment Miami Beach, GO!, 10.21pm
On the eve of his retirement, Lassard is being honoured as the Policeman of the Decade at the 50th Annual National Police Chiefs Convention in Miami Beach. At the airport terminal, Lassard accidentally picks up an overnight bag filled with $3 million in stolen diamonds. When the thieves locate and kidnap Lassard, his loyal graduates come to the rescue with hilarious results.
Speed, Ten, 8.40pm (Sydney)
Pop quiz, hot shot? How many times has Speed aired on Ten? There’s a bomb on the bus… Stay above 50! Classic lines from a classic movie! A hot-shot young cop is the target of a psychopathic bomber’s elaborate revenge plot. Jack Traven must race against time – and the speed limit – to save a busload full of innocent passengers.