That tune has gotten them some distance -- used in that J.Nickolson/Decaprio film (The Departed?), used in an episode of King Of The Hill, I think Wikipedia lists where its been used and its origins are kind of like Blackout which was by Woody Guthrie.

Seems there was another Celtic-punk tune that was used in a commercial, but I wanna say that was a Real Mckenzies tune. Anyone got some clarity on that?