Michael O'Neill is an actor, known for Dallas Buyers Club (2013), Transformers (2007) and Seabiscuit (2003).
Clemency
Lorenzo's Oil
The X-Files - Season 3
JAG - Season 10
Crazy
The X-Files - Season 10
Crossing Jordan - Season 5
Criminal Minds - Season 3
NCIS - Season 18
CSI: Miami - Season 4
The Resident - Season 1
Diagnosis Murder - Season 5
Army Wives - Season 2
Fringe - Season 4
Greys Anatomy - Season 19
Echoes - Season 1
Ghost Whisperer - Season 5
Diagnosis Murder - Season 2
Messiah - Season 1
This Is Us - Season 6
L.A. Law - Season 1
Boston Public - Season 4
Rizzoli and Isles - Season 4
L.A. Law - Season 5
Nothing But the Truth
Ally McBeal - Season 5