The only things I've seen him in outside Trek are Con Air and The Magical Legend of the Leprechauns...
Check him out in the 'Commitments'. Not a starring role but still a good one.
Hirogen Alpha wrote:
You also might consider him in more substantial roles in "Layer Cake" (opposite Daniel Craig) and "Intermission" (opposite Colin Farrell).
In addition to The Commitments
he was in two other Roddy Doyle films: The Snapper
, and The Van
where he had larger roles. He also played a bad guy in the Steven Segal movie Under Siege
. Of course, there's always the trusty IMDB: http://www.imdb.com/name/nm0000538/