- Brother of actress Nora Dunn.
- Was considered for the role of George Costanza in Seinfeld (1989).
- Graduated from Illinois Wesleyan University, Bloomington, IL. Gave commencement speech at his alma mater for the graduating class of 2008.
- Appeared in four Ivan Reitman produced movies one of them being a TV movie.
- Understudied by Skipp Sudduth in the world premiere of the Richard Fire-June Shellene play about commodities traders, "Dealing," at Northlight Theatre, 1987, then located in Evanston, Illinois.
- Replaced James Naughton, who filmed the TV series pilot of Bette (2000), when the series was picked up.
- Appeared as a doctor in an unused alternate ending for Evolution (2001).
- He has Irish, English, Scottish, and German ancestry.
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