
Acting
Peter MacKenzie (born January 19, 1961) is an American actor. In 1979, Peter took acting lessons in New York. He worked at a talent agency before deciding to work as an actor full time in 1984. His first major role was on Herman's Head. He is a character actor. He also played "Mr. Firestein" in the season 3 episode of The Drew Carey Show titled "The Sex Drug", as Mimi Bobeck's counsel in her sex harassment case against Nigel Wick, and co-starred in the 1987 film Firehouse. One of his minor roles was Mr. Sneed in Disney's Tom and Huck. He plays anti-war activist David Dellinger in the 2012 film The Chicago 8.

Malcolm in the Middle
Terry

Off Centre

The Mentalist
Holman Perry

It's Always Sunny in Philadelphia
Doctor

Criminal Minds

Criminal Minds
Jack Fisher

The West Wing
George Rohr - American Christian Assembly

Grey's Anatomy
Warren Kramer

Bones
Congressman Efran Hadley

How I Met Your Mother
Mr. Horvath

Mad Men
Cliff Perry

Your Honor
Calvin Bloom

Curb Your Enthusiasm
Man in shorts

The Parkers

Castle
Sergeant Roman

DAHMER - Monster: The Jeffrey Dahmer Story
Mr. Bertoglio

Boston Legal
Reid Harrington

Gilmore Girls
Dr. Schultz

ER
Mr. Pasbalas

One on One
Blaine Lockraven