Mark Ruffalo was 35 in Eternal Sunshine of the Spotless Mind when he played the character 'Stan Fink'.
That was over 20 years ago in 2004.
Today he is 56, and has starred in 84 movies in total, 54 of those since Eternal Sunshine of the Spotless Mind was released.
In Eternal Sunshine of the Spotless Mind, I think Mark Ruffalo looks: