Casey Siemaszko (b. Kazimierz Siemaszko on March 17, 1961) is an American actor.
Siemaszko was born in Chicago, Illinois to a Polish American father and an English mother. His most well-known film roles are Back to the Future and Back to the Future Part II as 3-D, Stand By Me as Billy Tessio, Young Guns as Charley Bowdre and as Curley in Of Mice and Men.
Siemaszko had a recurring role on the hit ABC television series NYPD Blue as Internal Affairs Captain Pat Fraker. He has also made guest appearances on the TV shows such as St. Elsewhere, The Facts of Life, Law & Order, and Law & Order: Criminal Intent. Siemaszko currently plays Detective Dan Williams in the FX drama Damages. He also has lent his voice-over talents to several video games.
Siemaszko is the brother of actress Nina Siemaszko and Corky Siemaszko, who is a reporter/writer for the New York Daily News.
Brother of Nina Siemaszko
Brother of Corky Siemaszko, a reporter/writer for the New York Daily News.
Son of a Polish underground fighter who survived the Sachsenhausen concentration camp.
His last name is pronounced "Shye-mash-ko."
Has a yellow belt in the martial art Hapkido
Went to and graduated from the Goodman School of Drama at Depaul University in Chicago, which his sister, Nina Siemaszko, later attended along with another alum, Gillian Anderson (I).
Competes in triathlons.
