Trivia

While portraying Roberta Guaspari's son, Nick, in "Music of the Heart", Charlie got to meet the real Nick in person to perfect his role, and later became good friends with him.

Was taught to play the cello by the real Nick. He can be seen playing Bach's prelude with the cello in "Music of the Heart"

He graduated from the New York City Lab School, a small public high school in New York City, in 1999. Nick Valensi (guitarist, The Strokes) graduated from the same high school in 1998. Claire Danes attended the junior high section of the school briefly from 1991-1992.

Real home videos and pictures of Charlie can be seen in the opening credits of Fathers' Day (1997) accompanied by the song "Young Boy" by Paul McCartney.

He was awarded the 2015 Los Angeles Drama Critics Circle Award for Featured Performance for "Bent" at the Mark Taper Forum Theatre in Los Angeles, California.

Replaced the actor who was playing Cpl. Jamie Smith in La caída del halcón negro (2001) because the actor had pulled his groin muscle during Ranger orientation.

He is of German Jewish (father) and German/Swiss-German (mother) descent. His mother is from a Mennonite family, and his maternal grandfather, J. Howard Kauffman, was a noted sociologist of Mennonite family life.

He was raised in Brooklyn, New York from the age of one.

According to the official site for the movie Fathers' Day, Charlie's interests include baseball, soccer, piano, horseback riding, and hockey.