Swans with Filth, Cop/Young God, Body To Body, Job To Job, and Public Castration Is A Good Idea. Simply nothing heavier.

I define heavy as slow, monolithic, crushing, hideously loud, insanely powerful rage/terror at 16 rpm. On these qualifications, Swans blow away almost all of the competition.

I'll also second (of course) the Melvins, specifically Gluey Porch Treatments (which I still don't quite get, but which is utterly heavy. Some parts of that album are truly amazing...whenever Buzz really lets loose with the Gene-Simmons-as-satanic-muppet vocals, it's genius).

Also, live Flipper (specifically the drunken, audience-baiting Flipper of Public Flipper Limited) were truly heavy. As Henry Rollins once wrote: "these guys are heavy. heavier than you. heavier than anything." you said it, hank.

Classic heavy also goes to Black Sabbath's Master of Reality and parts of (though not all of) Vol. 4, obviously. Blue Cheer also get a nod for Vincebus Eruptum, if only for historical importance and trailblazing originality (not necessarily because of how good they were, which was always debatable. How fun they were was never in doubt). The precursors for all of these albums. Sabotage also has to be counted for the massive crush trilogy of asswhompage that is "Hole In The Sky/Don't Start (Too Late)/Symptom of the Universe" (I've always thought of these three tracks as really one extended marathon of brilliance).

I saw Blue Cheer in May. They weren't good, but they were definitely heavy and ri-goddamn-diculously loud.

shorty
part chimp
smashy smashy
theory of ruin
karp

all pretty heavy bands I think.

the melvins are always heavy to me.

'eye flys' is a masterpiece of that sort and it is something i'll stand by.

actually all of 'gluey porch treatments' is good for the claim.

I saw a band in Dekalb called Hot Iron Skillet... wait, what thread am I in?

The Tap.

Les Rallizes Denudes