My updated list :
On the top of my head :
Top ones :
Incubus - If not now, when ?
Mobb Deep - Black Cocaine (EP)
Step In Fluid - One Step Beyond
Earth Crisis - neutralize the threat
Decapitated - carnival is forever
Set your goals - burning at both ends
Omnium Gatherum - new world shadows
Textures - dualism
Mastodon - hunter
Foo Fighters - Wasting Light
Revocation - chaos of forms
Trials - Witness to the downfall (not sure if it's 2010 or 2011 though...)
Steel Panther - Balls out
Sick Of It All - nonstop
Great albums :
Crowbar - Sever the wicked hand
Hatesphere - the great bludgeoning
Immolation - providence EP
S.O.S - i owe you nothing (ep)
The Black Dahlia Murder - Ritual
Skarhead - Dreams Don't Die (cover album)
H2O - Don't Forget Your Roots (cover album)
Exhumed - All Guts, No Glory
In Flames - Sounds of a Playground Fading
Truth'n'rights - ep (2010 or 2011 ?)
Wisdom in Chains - Pocono Ghosts ep
Unfold - Cosmogon
Chimaira - the age of hell (not stunning but i loved the experimentation and the fact that they didn't try to sound too much like their classic stuff, and there was a lot of "fresh" killer parts)
Crosses - ep (Chino Moreno / Jonah Matranga project)
Will Haven - Voir Dire
Sylosis - Edge Of The Earth
Fuck the facts - Die Miserable
Warbringer - World Turn Asunder
not out yet/not listened to yet but facemelting potential :
new Vision of disorder
new Glassjaw
new Down e.p
new Aborted
new God Forbid
new Pearl Jam
new Medeïa
new Homicidal
Not 2011 but i finally got into it recently :
Comes with the fall (amazing rock band fronted by William Duvall (Alice in chains))
Forbidden
Paramore
Extreme
Steel Panther
and a lot of classic NYHC/NJHC bands : Leeway, Bad Brains, Maximum Penalty, Both Worlds, Bitter End (amazing blend of Sepultura / Cro-Mags / Merauder), Bulldoze, Aggressive dogs, For the love of, train of thought, Homicidal, Karma never forgives, Ripface invasion, Cro-mags, Crown of thornz, Inhuman, Life of agony, NJ bloodline, Stigmata, ...
2011 disappointments :
Eddie Vedder - Ukulele Songs (fine for 3 songs but then gets really boring (i loved his first solo album though))
Sepultura - kairos
New Found Glory - Radiosurgery
Dying Fetus - history repeats itself EP
All Shall perish - this is where it ends
Machine head - into the locust
Morbid Angel - Illud Divinus Insanus (not as bad as people said, but not amazing either, just a good album)
L'esprit du clan - drama