Igor Straminsky in MAS*H, Richard M. Nixon in American Playhouse, Jacob Rubinstein in Ellis Island, Ted Fisher in The Beast, Assemblyman Ronald Zellman in The Sopranos, Chauncey Zeirko in Law & Order: Special Victims Unit, George Moore in Damages, Dr. August Kellerman in One Tree Hill, Judge Harvey Winter in The Good Wife, and Oscar Newman in Show Me a Hero. Riegert has starred in many movies including National Lampoon’s Animal House, Barbarians at the Gate, The Mask, Traffic, We Bought a Zoo, and American Pastoral. He won a Screen Actors Guild Award in 2001 for Traffic. Riegert was nominated for an Academy Award in 2001 for By Courier and for a Primetime Emmy Award in 1993 for Barbarians at the Gate.