An American actor. He is known for playing character roles in major studio films such as There Will Be Blood, The Mummy, Clive Barker’s Lord of Illusions, F/X2 and Van Helsing. He is a favorite of writer/director Stephen Sommers, who usually casts him in his films.
Description above from the Wikipedia article Kevin J. O'Connor (actor), licensed under CC-BY-SA, full list of contributors on Wikipedia.
One More Saturday Night
As Hood
The Mummy
As Beni Gabor
Chill Factor
As Telstar
Gods and Monsters
As Harry
Canadian Bacon
As Roy Boy
No Escape
As Stephano
Sasquatch Hunters
As Charles Landon
Steel Magnolias
As Sammy Desoto
There Will Be Blood
As Henry
Van Helsing
As Igor
Love at Large
As Art the Farmhand
Lord of Illusions
As Philip Swann
Deep Rising
As Joey Pantucci
The Love Bug
As Roddy Martel
Seraphim Falls
As Henry
Skateshop
The Moderns
As Hemingway
G.I. Joe: The Rise of Cobra
As Doctor Mindbender
Flight of the Living Dead
As Frank
Kettle of Fish
As Harry
F/X2
As Matt Neely
Candy Mountain
As Julius
Black Cat Run
As Hobbs
Hit Me
As Cougar
The Master
As Bill White
Equinox
As Russell Franks
Chicago Cab
As Southside Guy
Masterminds
As Upscale Party Guest (uncredited)
Angels Unaware
As Police Chief
Captive
As FBI Agent
Color of Night
As Casey
Peggy Sue Got Married
As Michael Fitzsimmons
Careful What You Wish For
As Pier/Patron du bar
The Cleanse
As Fredericks
Hero
As Chucky
One Last Score
As Jamie Cooper
Widows
As Bobby Welsh
The Caine Mutiny Court-Martial
As Lt. Thomas Keefer
Captive State
As Kermode
Blame it on Toby
As Arthur Prentiss-Wilcox
Buck Run
As John Yoder
Colewell
As Charles
Amistad
As Missionary
Virtuosity
As Clyde Reilly
Exorcism at 60,000 Feet
As Buzz
Mile 22
As CIA Case Officer (uncredited)
Wish Upon a Unicorn
As Willie
Signs of Life
As Eddie Johnson
Law & Order
As Patrick McCarter
Tanner '88
As Hayes Haggerty
The Others
As Warren Day
Law & Order: Criminal Intent
As Dr. Evan Chapel
Century City
Gideon's Crossing
As Dr. Michael Pirandello
The Beast
As Harry Conrad
Birdland
11.22.63
As Yellow Card Man
Chicago P.D.
As Commander Fischer
Catch-22
As Lt. Col. Korn
The Blacklist
As Calvin Dawson
On Becoming a God in Central Florida
As Roger Penland