Fleshpress - Self titled - Very much in the vein of eyehategod
Taint - Ruins of terra nove - Pretty good too, not exactly sludge but they definitely have that feel to them at times
Abandon - In Reality We Suffer - Some heavy grind/sludge, I love 'em
Capricorns - Ruder Forms Survive
Boris - Absolutego and Amplifier Worship - both great sludgey albums
Old man gloom - Meditations In B
Kylesa - To Walk A Middle Course - Awesome sludge album
Iron monkey are hands down my favourite sludge group though.