Michael O'Neill and Mary Elizabeth Ellis in A Quiet Little Marriage (2008)

Michael O'Neill and Anna Torv in Fringe (2008)

Marc Blucas and Michael O'Neill in Necessary Roughness (2011)

Ismael 'East' Carlo and Michael O'Neill in Commander in Chief (2005)

Carrie-Anne Moss and Michael O'Neill in Vegas (2012)

Patrick Dempsey, Michael O'Neill, and Mia Barron in Grey's Anatomy (2005)

Patrick Dempsey, Michael O'Neill, Dougald Park, and Mia Barron in Grey's Anatomy (2005)

Joshua Jackson, John Noble, Michael O'Neill, and Anna Torv in Fringe (2008)

Simon Baker, Michael O'Neill, Pepper Sweeney, and Tim Kang in The Mentalist (2008)

Timothy Hutton and Michael O'Neill in Leverage (2008)

Michael O'Neill at an event for Clemency (2019)

Michael O'Neill at an event for Extant (2014)

Michael O'Neill at an event for Secondhand Lions (2003)

Michael O'Neill, J. August Richards, Tom Everett Scott, Sarah Wayne Callies, Clive Standen, Emjay Anthony, Michele Weaver, Thalia Tran, and Blue Chapman in Council of Dads (2020)

Denis O'Hare, Michael O'Neill, Tom Everett Scott, Angélica Celaya, Damon Dayoub, and James Jurdi in Danger One (2018)

Amy Brenneman, Kathy Baker, Vincent Angell, and Michael O'Neill in ATF (1999)