Hit comedy The Big Bang Theory has been renewed by US TV network CBS for a further three years.
The extraordinary deal would carry TV's most-watched sitcom through the 2016-2017 season, the series' tenth on the air.
The Big Bang Theory premiered in September 2007 and has been a ratings smash for virtually its entire run.
It has averaged nearly 20 million viewers in the US each week this season.
A comedy about science nerds and the people who love them, it stars three-time Emmy-winner Jim Parsons as well as Johnny Galecki and Kaley Cuoco-Sweeting.
*The Big Bang Theory airs in Australia at 8.40pm on Tuesdays on the Nine Network.
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