Mark Ruffalo was spotted filming scenes for the upcoming film, Can A Song Save Your Life? in New York City last week. This might be the first time he has been filming scenes without another co-star in the scene with him.
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I wonder how he feels finally filming scenes by himself. He gets to be the star for that part of the day anyways. I'm sure we'll see him filming scenes with Keira Knightley again soon.

