I saw this band support In Flames a few weeks ago and was completely blown away. Their debut album was only released in January 2011 but the buzz behind them has grown so much that both James Hetfield and Phil Alesemo have name dropped them as a band to seriously watch.
Putting aside their sound for a moment, this band (in case you've never heard of them) are from Sweden and offer one extremely unique thing - their commitment to a bit. I implore you to watch the first video below, a HQ video of their appearance at Hellfest this year, because this is exactly how this band dress and appear onstage for every performance.
There are rumours who the main person in the band (credited as Papa Emeritus) actually is but the rest of the band are simply credited as "unnamed ghouls" and have appeared in a video interview - with their voices distorted - as such. Emeritus has never, in character at least, done any interview that I'm aware of. The band also appeared at Download performing with Down.
In this age of Internet I have to applaud the band for their commitment to their anonymity and their commitment to a bit. I also love their sound. And for some reason they also cover The Beatles from time to time.