As is evident from his performance in 'What's Your Number,' Chris Evans is very good at looking wistfully off into the distance. That skill came in handy on the set of 'The Avengers' -- at least judging by these newly released stills. Why so serious, Captain America and Black Widow? Check out Evans and Scarlett Johansson getting their stare on in two new pics from the Marvel mega-movie ahead.
[Top Photo: Getty // Photos: Disney]
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