What role is the actor who played Don Flack best known for?
Donald Flack, Jr. Don Flack is a fictional character on the CBS television series, "". He is portrayed by Eddie Cahill.
John F. O'Donohue John F. O'Donohue is an American actor and former police officer who is perhaps best known for his role as Sgt. Eddie Gibson in the television series "NYPD Blue".