We don't have a biography for Dennis O'Neil yet. Hang in there, or go ahead and contribute one.
Known For
Credits
Cast Credits
100 Questions (2010)
Guest starring as Guy
- Episode 1x06: Have You Ever Had a One-Night Stand? (Jul 1, 2010) [Co-Star]
In Plain Sight (2008)
Guest starring as Jasper Malone
- Episode 3x03: Coma Chameleon (Apr 14, 2010) [Co-Star]
Walker, Texas Ranger (1993)
Guest starring as Boland
- Episode 2x19: Skyjacked (Apr 2, 1994) [Uncredited]