Peter Slipper may have been sidelined from the prestigious Speaker's position in Parliament, but there is a job for him with a fake dictator if he wants it.

British actor Sacha Baron Cohen - famous for his Ali G and Borat characters - arrived at Sydney Airport this morning dressed as a dishevelled dictator in Qantas pyjamas and demanding to see "Slippery Pete".

Baron Cohen, sporting a thick accent and accompanied by a bevy of women dressed in military costumes, barked out his plans for his trip to Australia.

"I've come to find Mr Slipper," he said. "The Slipper! Slippery Pete!"