MASTODON one may well if you look at it as the freaky band since the legendary TOOL. At least if you look from the mainstream perspective.
In 2011 the 5th studio album of the Band with 13 tracks is out.
Amazing how this band is capable of repeatedly reinventing without to left the sacrificing power & inventiveness.
The term metal can be the most still used for marketing- band definitively says goodbye from this earth.