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  • Powerless

    Vanessa Hudgens, Danny Pudi, Alan Tudyk, and Christina Kirk give us a tour of the set of NBC's comic book comedy.

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  • Bitsie Tulloch

    Actress discusses the 6th and final season of her hit NBC series "Grimm" and how she got her nickname.

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  • DJ Khaled

    Rap stars like Chance the Rapper & Diddy gather to support the hip hop legend as he announces his 10th album 'Grateful'.

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  • Noah Cyrus

    Singer performs acoustic version of her debut single "Make Me (Cry)" and talks about collaborating with Labrinth.

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But Mark Ruffalo has been through the pain of toning up his body before - he followed in his dad's footsteps and won medals as a student wrestler.

He tells E!Online, "They (film bosses) want me mean and lean, but they don't want me big and buff. I gotta keep building and building and building. You have to eat to build muscle."

"I was a wrestler. I'm used to starving myself. It's easy for me. The last two weeks you just walk around spitting into a cup."