Before Jason Alexander landed the role of George Constanza on Seinfeld, Kevin was a potential candidate to portray the character. Dunn did appear on the series, but as a guest star in the episode "Male Unbonding".
His theatrical credits include The Front Page at the Goodman Theatre in Chicago from 1981-1982, The Time of Your Life at the Goodman Theatre from 1983-1984, and Dealing at the Northlight Theatre in Evanston, Illinois from 1986-1988.
Film, Video, and TV Movie Credits:
• Transformers: Revenge of the Fallen (2009) as Ron Witwicky
• Lions for Lambs (2007) as ANX Editor
• Transformers: Beginnings (2007) (V) (voice) as Ron Witwicky
• Transformers (2007) as Ron Witwicky
• A Perfect Day (2006) (TV) as Darren
• All the King's Men (2006) as Alex
• The Path to 9/11 (2006) (TV) as Samuel 'Sandy' Berger
• The Black Dahlia (2006) (uncredited) as Elizabeth Short's Father
• Live Free or Die (2006) as Monson
• The Darwin Awards (2006) as Insurance Exec
• The Mikes (2006) (TV)
• Marsha Potter Gets a Life (2005) (TV)
• NTSB: The Crash of Flight 323 (2004) (TV) as Cyrus
• L.A. Sheriff's Homicide (2003) (TV) as Lt. Bob Coughlan
• The Stranger Beside Me (2003) (TV) as Dick Reed
• Gleason (2002) (TV) as Jack Philbin - Gleason's manager
• Confessions (2002)
• The Beach Boys: An American Family (2000) (TV) as Murry Wilson
• On the Edge of Innocence (1997) (TV) as Dr. Barbico
• Shattered Mind (1996) (TV) as Eric
• Unforgivable (1996) (TV) as Milton 'Milt' Stella
• Jack Reed: A Killer Among Us (1996) (TV) as Phil Brenner
• Shadow of a Doubt (1995) (TV) as Mark Evola
• Jack Reed: One of Our Own (1995) (TV) as Phil Brenner
• The Four Diamonds (1995) (TV) as Charles Millard/Charles the Mysterious
• Beethoven's 2nd (1993) (uncredited) as Brillo, Missy's Owner
• 1492: Conquest of Paradise (1992) as Captain Mendez
• Double Edge (1992) (TV) as Webber
• Blind Faith (1990) (TV) as Lt. Gladstone
• Taken Away (1989) (TV) as Lombardi
• Night of Courage (1987) (TV)
Among the characters he played in pilots that were not picked up include Francis Xavier Hennessey in CBS' The First Gentleman (1994) and Banning in a FOX's NYPD 2069 (2003).
Kevin: (on working with real military personnel in "Transformers: Revenge of the Fallen") You get so much information and they're so ready to tell you about everything that they're doing. I think I was talking to a tank commander. It's just great. You just learn so much about what goes into everything these people do.