The `Mad Men` actor - who has long-been compared to the Hollywood hunk - confesses he would "love to emulate" the `Men Who Stare At Goats` star`s career because of the variation of his work.

He said: "We already have a perfectly serviceable George Clooney, but that`s certainly someone whose career I would love to emulate because he`s been able to work in various genres and walk the line between drama and comedy.

"He also got started very late in life because `ER` came when he was well into his thirties, so he bounced around, not unlike me, from show to show and failed pilot to failed pilot, and then `ER` happened and he blew up."

However, despite wanting a career like Clooney, `The Town` star admits acting was not always his first love and he spent his childhood dreaming of working under the sea with fish and in space.

He told Total Film: "I wanted to be a marine biologist, a teacher, and astronaut and an actor, and my parents never said, `You can`t do that,` or, `That`s not realistic.` So when I decided to move to New York and try out acting on a whim, they didn`t stop me.

"It turned out to be something I loved and I`ve been lucky enough to be able to do this for a job, so far."
sections: Celebrities