Acting

2023

(1 episode) as The No Man/ Bill

2022

(1 episode) as Francis I of France

2021		Fúria (1 episode)
2021		Back to Barrytown (3 episodes) as Self / Narrator

2020		The Singapore Grip (6 episodes) as Major Brendan Archer
2020		Gangs of London (10 episodes) as Finn Wallace

2017

(10 episodes) as James Burbage

2015

(3 episodes) as Wainwright

2014

(3 episodes) as The Horse

2011

(57 episodes) as Thomas 'Doc' Durant

2009		Alice (2 episodes) as King of Hearts
2009		Mercy (1 episode)
2009		ZOS: Zone of Separation (8 episodes) as George Titac

2008

(0 episodes)

2006		Men in Trees (1 episode)
2006		Covert One: The Hades Factor (2 episodes) as Peter Howell
2006		The Unit (1 episode)

2005

(2 episodes) as Shelley Kelly

2004		Stargate Atlantis (3 episodes) as Cowen
2004		The Murdoch Mysteries (3 episodes) as Inspector Brackenreid

2001

(2 episodes) as Harold Garrett

1999

(2 episodes) as Seamus Muldoon

1994		Scarlett (4 episodes) as Father Colum O'Hara
1994		Gargoyles (1 episode)

1993		Star Trek: Deep Space Nine (176 episodes) as Miles O'Brien
1993		Dr. Quinn, Medicine Woman (1 episode)

1991

(1 episode)

1990

(1 episode) as Wyatt Landon

1989

(1 episode)

1987

(1 episode) as Chief O'Brien (1 episode) as Chief Miles O'Brien (voice) (1 episode) as Self (11 episodes) as Chief Miles O'Brien (3 episodes) as Transporter Chief (1 episode) as Battle Bridge Conn (37 episodes) as Miles O'Brien

1985		MacGyver (1 episode) as Dr. Irwin Malcolm
1985		Moonlighting (1 episode) as Keterina Suitor (as Colm Meany)

1984

(1 episode) as Constable