14 of Mark Ruffalo's Best Movies Through the Years

Mark Ruffalo and Keira Knightley join forces in John Carney's musical love letter to New York City. Carney, who is known for his films "Once" and "Sing Street," brought music to the streets of New York by way of this little musical movie. Ruffalo plays a down-on-his-luck music executive and Knightley a singer trying to find her break. They end up helping each other and recording an album in various public locations around the city.