Mighty Mighty Bosstones re-united in 07, just released a new album (Pin Points and Gin Joints) last year. I think Great Big Sea is still around, too.. though I was never really big into them so didn't bother following.
http://www.youtube.com/watch?v=iYmmh9zkpQM - The best version of this song I've ever heard. Nobody can deny how incredible the performance is. I watched it for the first time yesterday and it really did send shivers down my spine.