Mark Ruffalo

Mark Alan Ruffalo (b. 1967) is an American actor, director, producer and screenwriter. He is best known for starring in films, such as Eternal Sunshine of the Spotless Mind, Zodiac, Shutter Island, Just Like Heaven and You Can Count on Me. He also received an Academy Award nomination for Best Supporting Actor in The Kids Are All Right.

Ruffalo will appear on Sesame Street to explain the word "empathy" in a Season 42 Word of the Day segment.