
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

Frasier
1993

Chicago P.D.
2014

Blue Bloods
2010

CSI: Miami
2002

The Good Wife
2009

Lost
2004

Monk
2002

True Detective
2014

White Collar
2009

ER
1994

Without a Trace
2002

Sherri
2022

Banshee
2013

Third Watch
1999

Boardwalk Empire
2010

Unforgettable
2011

Ozark
2017

Dr. Quinn, Medicine Woman
1993

Power
2014

Shutter Island
2010

Power Book II: Ghost
2020

Body of Proof
2011

Early Edition
1996

Dollhouse
2009

Jack Reacher
2012

Teenage Euthanasia
2021

Maniac
2018

My Best Friend's Wedding
1997

Power Book IV: Force
2022

Charlie Wilson's War
2007

Reasonable Doubt
2022

Safe
2012

The Player
2015