
Acting
Sikora was born in Chicago, Illinois, to mother Barbara and father Albin, one of three boys, and lived in the Jefferson Park and Norwood Park neighborhoods. He is of Polish and Dutch descent. Sikora graduated from Notre Dame College Prep in 1994. He studied acting at Columbia College Chicago, where he earned his MA in theater.

Law & Order: Special Victims Unit
1999

Grey's Anatomy
2005

Criminal Minds
2005

Chicago P.D.
2014

CSI: Miami
2002

Blue Bloods
2010

Lost
2004

Frasier
1993

The Good Wife
2009

Monk
2002

Sherri
2022

Without a Trace
2002

ER
1994

Third Watch
1999

White Collar
2009

True Detective
2014

Banshee
2013

Dr. Quinn, Medicine Woman
1993

Ozark
2017

Boardwalk Empire
2010

Unforgettable
2011

Early Edition
1996

Shutter Island
2010

Body of Proof
2011

Power
2014

Power Book II: Ghost
2020

Reasonable Doubt
2022

Jack Reacher
2012

Dollhouse
2009

Power Book IV: Force
2022

Teenage Euthanasia
2021

Maniac
2018

Safe
2012

Charlie Wilson's War
2007

The Player
2015

My Best Friend's Wedding
1997