The way that Irish musicians use triplets (the rhythmic variation that puts the diddly-diddly into a tune) means that there is a bit of a synergy with reggae.
- Sharron Shannon had a not-bad example about ten years ago with her Out the Gap album (Amazon has samples)
- Young Ned of the Hill (Dub) on the b-side of the Pogues 'Misty Morning Albert Bridge'
I'm sure there are plenty more examples, but this should do for now.
(*via dev/random who got it from Boing Boing)