Jason O'Mara is from Dublin, Ireland. He originally aspired to become a professional rugby player, but because of an injury, he got into acting.
You may be familiar with O'Mara from his role as Sam Tyler in the US remake Life on Mars. He has also been in
The Agency, CSI: Miami, The Closer, In Justice, Criminal Minds, Men In Trees, Resident Evil: Extinction, Grey's Anatomy, and Trust Me.
You can also see Jason in Fox's new series, Terra Nova.