Well, I guess I have to...
Radiohead
Mars Volta
Coheed and Cambria
Red Hot Chili Peppers
Shpongle
Bluetech
Emancipator
Solarstone
Sunstryk
Omar Rodrigues Lopez
Black Sun Empire
Nine Inch Nails
Tool/ A Perfect Circle/ Puscifer
Thrice
30 Seconds to Mars
Matisyahu
Cage the Elephant
Prometheus
Younger Brother
Rammstein
Rage Against the Machine
Hallucinogen
Aesop Rock
Necro
Bad Religion
Just joking!
Although I do like them all...
Actual metal:
Bloodbath
Emperor
Enslaved
Circle of Contempt
Born of Osiris
Opeth
Burzum never really impressed me...
Bathory
Immortal
Xasthur
Ne Obliviscaris
Animals as Leaders
Red Sparrowes
Sunn0)))
Veil of Maya
Otep
Strapping Young Lad/Devon Townsend XD
Necrophagist
Arsis
The Air I Breathe
Northlane
Ulver
Woe is Me
Of Machines
Attack! Attack!
Jamie's Elsewhere
Beneath the Massacre
Between the Buried and Me
Cephalic Carnage
Gorgoroth
The Human Abstract
The Number Twelve Looks Like You
Psyopus
It Dies Today
Lamb of God
Megadeth
Pantera
Melechesh
Old Man's Child
Dimmu Borgir (Enthroned Darkness Triumphant, specifically)
Three Inches of Blood
Annihilator
Xanthochroid
In Flames
The Faceless
Turmion Katilot
Cattle Decapitation
Killswitch Engage
Devildriver
Thy Art is Murder
Aeon
Leviathan
Arch Enemy
Rings of Saturn
Death
Scar Symmetry
And more... I just can't remember.
Obviously, a broad set of categories of metal, but metal.