Mitchell Craig "Mitch" Pileggi (born April 5, 1952) is an American actor. Pileggi is known for playing FBI assistant director Walter Skinner on the long-running popular series The X-Files. He also had a recurring role on Stargate Atlantis as Col. Steven Caldwell. He appeared in the 2008 film, Flash of Genius.
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Known for
Grey's Anatomy (2005)·Supernatural (2005)·Transformers: The Last Knight (2017)·American Horror Story (2011)·Basic Instinct (1992)·Supergirl (2015)