Don't let that silver hair fool you - this old dog still has some new tricks to learn.
"I felt like this was in a way something new to him, he wasn't experienced," Placido told People. "He confessed that he didn't do a lot of sex scenes."
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Placido, who has appeared in various stages of undress for various Italian magazines, including GQ and Playboy, played a prostitute in the film and Clooney's steaming love interest. She said despite his relative innocence, the two managed to make the sparks fly on screen.
"It had to look real; it is a turning point for the two characters," Placido said. "We had to find a way to make it natural and let your body speak somehow."
Clooney, in real life a year shy of his 50th birthday, played an aging hit man trying to survive one last assignment before retirement. "The American" hits the big screens on September 1.