Irish Internet Radio and TV from Dublin, Ireland.
Wow, that's no easy question.
Right now I have altan, karen casey and eleanor mcevoy on my ipod. But at any given time I'll tune into the Waterboys, the Sawdoctors (Davey & Leo still sound good to me), Christy and we have to include Dougie McLean. And it's hard to leave out the wonder from down under, Eric Bogle and Tommy Sands and the Sands Family. Finally I can always get up for a couple of hours of head bangin' Irish punk.
There's a lot of great stuff out there that unfortunately the mainstream is missing.