Reign In Blood is the greatest metal album ever. I also have a soft spot for South of Heaven
But does anyone know any recent metal bands that are cool? One of my favourites is Sunn O))), but they can hardly be called metal in the classic sense. Mastodon definitely rock, and if you want, the Melvins never made one bad record. I'm looking for more of the sound Mastodon are playing. Any suggestions? I guess my taste goes rather into the sludge direction, but I don't know the genre too well...
Harvey Milk -Like early MELVINS and The Swans, slow, dark (but darkly humorous), noisy (they also did a ZZ Top inspired album)
Baroness - considered by metalheads to have too much indie rock influence, but that's only because they mix hooks and good production with the sludge)
Kylesa - somewhat similar to Baroness, but more hardcore influenced with insane double drumming and male.female vocals
BORIS - experimental Japanese metal, named for a MELVINS song, recent albums have had a MY Bloody Valentine/ psychedelic influence. Made an album with Sunn0))).
EYEHATEGOD/Outlaw Order - classic southern sludge.
Weedeater - Sludge with a southern rock influence
Blutch - slow, sludgy , noisy
Torche - similar to Baroness, with a more stoner rock influence
Electric Wizard - noisy, sludgy, british band
Earthride - classic doom
Acid Bath - NOLA sludge with more range than normal for this type of band. Dax Riggs of Deadboy and The Elephantmen and Fat Possum records started with them
Jucifer - early on they crossed Breeders type alternative rock and MELVINS type sludge. as time has gone on they've amped up the sludge and downplayed the alt rock, but added some Americana influence. They do an especially over the top live show.
Municipal Waste - kings of the Crossover Thrash revival
Pig Destroyer - grindcore with some interesting twists
High On Fire - like Motorhead with Tony Iommi on guitar
Om - hypnotic bass/drums duo
Black Mountain - more hard rock than metal. Deep Purple heaviness, Pink Floyd psyche, Stonesy boogie and male/female vocals that remind me of X and Royal Trux
Fatso Jetson - dudes who've played with Queens of the Stone Age. Kinda like a stoner rock Minutemen
anything Scott "Wino" Wienrich ("the American Lemmy") has ever done - Saint Vitus, The Obsessed, Spirit Caravan, The Hidden Hand, Place of Skulls, Probot, Shrinebuilder, and a solo album. Due loves his Sabbath, in a very good way.