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 The cast of Iron Man 3 (minus Gwyneth Paltrow, who couldn't attend the re-scheduled date) hit London's Leicester Square for the swanky launch of what's bound to be one of the biggest films of the year. Robert Downey Jr, oblivious to onlookers, hugged and kissed his producer wife Susan while the crowd cheered him on; premieres rarely get this obvious a public display of affection. Next time Robert, maybe get a room? Marvel's Iron Man 3 pits brash-but-brilliant industrialist Tony Stark/Iron Man (played by ever charismatic Downey Jr) against a formidable enemy. When Stark finds his personal world destroyed at his enemy's hands, he embarks on a harrowing quest to find those responsible. Check out the photos of the cast having fun at the premiere...

 We know Iron Man 3 actor Robert Downey Jr plays a superhero on the big screen, but we weren't aware that he has ninja skills in real life too! Robert showcased his Kung Fu skills in China, where he is currently promoting the latest Iron Man movie. The actor looked a little nervous about performing his routine in front of the press, who were all gathered at the Imperial Ancestral Temple in Beijing. Flick through our gallery to see what else Robert has been up to during his visit to China...