If you want something a little bit different, check out Cultus Ferox.
They play metal mixed with German folk music, with huge-ass bagpipes and stuff.
A bit like a more melodious medieval Rammstein with bagpipes, sort of.

I caught their concert live while I was at the Medieval festival of Visby and they were just totally awesome!
Clad in but a few small pieces of leather, they got everyone half-naked, shouting and rocking out to tunes a millennia old.