I can also point out from Spain:

Carlos Nuñez (really goooood!)
Hevia
The "Naciones Celtas" compilations. ( 5 volumes)
Luar na Lubre
Susana Seivane
... and lots and lots of many celtic bands and solists that I don't remember now, but I'll post surely soon!

¡Salud!

T O N O

IF YOU CAN LOCATE THE LAST CD FROM CARLOS NUÑEZ (Carlos núñez y amigos.... en casa) IT'S A LIVE CD +DVD, WITH MANY KNOWN PEOPLE ON THE SCENERY, INCLUDING THE SCOTTISH NATIONAL YOUTH PIPE BAND FROM GLASGOW.