While this song can be found on Shira Kammen's "The Castle of the Holly King" album, she is definately not the one who sings in "The Wren in the Hurze" ;-) This is a great celtic song featuring fast, mind-boggling lyrics (think tongue-twister) and impressive percussions. I think a Bodhrán is used, but don't quote me on that.
Next up is the catchy acoustic country song "Sweet Sadistic Blues" (I sure like that name ;-) by Matthew Boudreau. Enjoy.
Slowly drifting into the world music genre now... Falik's "Mezza Messa" is a great piece of rhythmic, percussion driven, instrumental middle-eastern music with a touch of electronica.
Time for changing the genre — here's some very cool electronica by Kemikal Death, great beats and some very cool sounding instrument/sample at the very beginning which I can't quite identify. Any hints?