Three Trapped Tigers - fantastic instrumental noise-rock band from London
Russian Circles from Chicago. Awesome post-rock/post-metal, that bass distortion melts my face!
Baroness from Georgia (the US one), post-grunge/melodic metal.
The Hackensaw Boys from Virginia. Up there with OCMS for exciting contemporary old time/bluegrass
Alamaailman Vasarat from Finland - the best band in the world? Playing traditional music from Hammer-Asia, with a hint of the underworld.
Old Crow Medicine Show from Nashville. Surely the most exciting Old Time revival/alt-country band in existence?
Woohoo Revue from Melbourne, Australia. Another great Aussie live band - Balkan dance mania
Sheelanagig from Bristol, possibly the most entertaining live band you will ever see! Celtic/Balkan dance mayhem.
The Barons of Tang from Melbourne, Australia, self-proclaimed Gypsy Death-core.
Afenginn, self described 'Bastard Etno' from Denmark... good fun!