Known for Acting

Casey Siemaszko (born Kazimierz A. Siemaszko) is a Polish-American actor and the brother of actress Nina Siemaszko. The son of a fighter in the Polish Underground who survived the Sachsenhausen concentration camp, Siemaszko narrated the 1998 feature, The Polish-Americans. Siemaszko was a graduate of the Goodman School of Drama at DePaul University in Chicago, which his sister, Nina Siemaszko later also attended. His acting career consists of smaller roles in dozen of popular films, including Back to the Future, Young Guns, Silence of the Heart, Of Mice and Men, Killing Kennedy, Back to the Future Part II and Stand By Me.
1985
as 3-D
1986
as Billy Tessio
1989
as 3-D
2009
as Harry Berman
1983
as Doug
1988
as Charley Bowdre
1988
as Don Carney
1994
as Cash
1996
as Morgan
2000
as Young Bobby Bartellemeo
1985
as Roger Despard
1997
as Tanner
1992
as Curley
1999
as Bobby Gastineau
1996
as Detective Bobby Zito
1987
as Jerry Mitchell
1995
as Conan (voice)
1994
as Michael
1987
as Wildman
1991
as Hutchinson