Nile is an amazing grind-death metal band. To me they are the most brutal band in the metal scene, yet one of the most skilled in song writing. A lot of bands are "brutal" because they tune down, or play fast, but can't write a song to save their ass. Nile are quite technical and have a unique approach to song writing. The songs are accessible, but never token, every part having something of a signature feel. My favorite album is Amongst the Catacombs of Nephren-Ka. The first time I heard it I was floored. It was so heavy and fast, but technical and extremely tight. The next release, Black Seeds of Vengence, is also good. It has some more variety in feel, with some slower ultra-doomy parts mixed in. Either way you can't go wrong. If you like heavy death metal, get this album. They and Cryptopsy have redefined brutal death metal.