![Bill O'Brien Portrait of Bill O'Brien](http://es.actoragecheck.com/lost-image.jpg)
Movies (Acting Roles)
Sorted by Release DateTV Shows (Acting Roles)
Sorted by Release DateAges in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages
![Law & Order: Criminal Intent Poster of Law & Order: Criminal Intent](http://es.actoragecheck.com/image/LzYyUzdTbE8xY0FiSlhOSENVZDl0UzlRekxmWS5qcGcAACh231.jpg)
Law & Order: Criminal Intent
Bill O'Brien was ? in Law & Order: Criminal Intent as 'Peter Lyons'.TV Show Released: First Air Date
Sun, Sep 30 2001
Sun, Sep 30 2001
![The West Wing Poster of The West Wing](http://es.actoragecheck.com/image/L3lxRFdyNU5BRTdtMUlXcnlnWXdMeUVCNnBOMC5qcGcAACh231.jpg)
The West Wing
Bill O'Brien was ? in The West Wing as 'Kenny Thurman'.TV Show Released: First Air Date
Wed, Sep 22 1999
Wed, Sep 22 1999
![Providence Poster of Providence](http://es.actoragecheck.com/image/L293dFhHaWdBcDh4RmFFd2RlbEh3Q2RVMldLOS5qcGcAACh231.jpg)
Providence
Bill O'Brien was ? in Providence as 'Brian McCulley'.TV Show Released: First Air Date
Fri, Jan 08 1999
Fri, Jan 08 1999