His father was Polish and his mother was Ukrainian. They had been forced into factory labor by the Nazis.
Last name is pronounced "ZUHN-zuh".
Retired from acting in 2011. He's since directed several stage plays including "Doubt" and "I Am My Own Wife" for local theatre groups.
Left Law & Order (1990) over a dispute about scheduling and script quality. During the first season, Dzundza's wife was pregnant and he had to divide his time between his home and New York. The producers threatened to sue Dzundza if he held up shooting to be with his wife when she gave birth.