Mark Feuerstein got his break-through on television as a recurring character on the daytime soap opera Loving (1983). Most of the people in his family are lawyers. He was a high school state championship wrestler. He enjoys mountain-biking, wrestling, dancing (hip-hop to salsa) and jogging.

He got the nickname "Chaplin" on the set of Giving It Up (1999) because of his uncanny knack of physical comedy. He even had a physical slapstick back-and-forth with Mel Gibson a year later on the set of What Women Want (2000).