- Founded what would become Chicago's Steppenwolf Theatre Company in 1974 with his high-school friends Gary Sinise and Terry Kinney, and served as its artistic director in the 1980s.
- Met first wife, Laurie Metcalf, when both were theater students at Illinois State University.
- Made movie debut in Remember My Name, a 1978 drama produced by Robert Altman; appeared in The Wedding (directed by Altman) later that year.
- Has appeared on some 40 TV series, including Columbo, Family Ties, thirtysomething, L.A. Law, Frasier, NYPD Blue, ER, The West Wing, Lost, Prison Break, Cold Case, C.S.I: Crime Scene Investigation and CSI: New York.
- Was a regular on CBS's Nash Bridges (1996-2001)
- A semiregular on Grey's Anatomy (he plays Meredith Grey's father, Thatcher), he's married to series casting director Linda Lowy.
- Linda Lowy — Wife
- Laurie Metcalf — Ex-wife
- Leah Perry — Daughter
- Zoe Perry — Daughter
- Illinois State University, Normal, IL (BA in theater, 1978)
Season 5, Episode 3
- Birth Place: Highland Park, IL
- Birthday: August 16, 1955, Leo
- Profession: Actor
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