
Acting
Nicky Katt (May 11, 1970 – April 8, 2025) was an American actor. He was best known for his role as Harry Senate on the television show Boston Public and for his roles as unsympathetic villains. He also appeared in films including Insomnia, The Limey, SubUrbia, and Sin City, and was a semi-regular collaborator of Richard Linklater, Steven Soderbergh, and Christopher Nolan.
Description above from the Wikipedia article Nicky Katt, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Richard Linklater: Dream Is Destiny
as Self (archive footage) (uncredited)

21 Years: Richard Linklater
as Self - Actor

Behind the Candelabra
as Mr. Y

The Sitter
as Officer Petite

The Dark Knight
as Shotgun SWAT (uncredited)

Harold
as Police Officer

The Brave One
as Detective Vitale

Death Proof
as Counter Guy

Planet Terror
as Joe

Grindhouse
as Joe (segment "Planet Terror")

Love Monkey
as Nathan Kitt · 1 ep.

Monk
as Ryan Sharkey · 1 ep.

The Guardian
as Evan Piscarek · 2 ep.

Boston Public
as Harry Senate · 49 ep.

King of the Hill
as (voice) · 1 ep.

Kindred: The Embraced
as Starkweather · 1 ep.

Friends
as Arthur · 1 ep.

Law & Order
as Isaac Krantz · 1 ep.

Dear John
as Amorous Male Student · 1 ep.

V
as Sean Donovan · 2 ep.
Insomnia
2002