Chris Evans and Scarlett Johansson have worked on multiple films together since they were teenagers. But on a visit to the “Ellen” show to promote “Avengers: Age Of Ultron,” in which they both star, Johansson learned she didn’t know Evans as well as she thought she did. In true “Ellen” form, the actor scared the crap out of his co-star just by shouting her name. “It was his idea,” DeGeneres said. Well played, Evans.

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