So besides metal......

(not to sound to english but) QUEEN!!!!!
Bon Jovi
Angerfist
Delta9
Cypress Hill
Daft Punk
New Order
Depeche Mode
Armand Van Helden
 
Adolf Plays The Jazz
Allan Holdsworth
At the Drive In
Boris
Coheed and Cambria
Converge
The Cure
Dashboard Confessional
Don Caballero
Drive like Jehu
Dredg
Explosions In The Sky
The Fall Of Troy
Foo Fighters
Frank Zappa
Fredric Chopin
Giraffes? Giraffes!
Glenn Branca
Ground Zero
Jesu
Jimmy Eat World
Joe Satriani (about the only guitar instrumentalist I can listen to now really, everything else sounds like guitar wank, well okay, so Zero Order Phase ruled)
Jonas Hellborg
Kayo Dot
Kyuss
Laura
The Living End
Long Distance Calling
The Mars Volta
maudlin of the Well
Merzbow
Mihai Edrisch (really cool French screamo band)
Minus The Bear (this is the band I have been listening to most lately, my FAVORITE indie rock/experimental band)
Mogwai
Mono
OHM:
Ornette Coleman
Paramore
Pearl Jam
Pink Floyd
Portishead
Radiohead
Refused
The Samuel Jackson Five (post rock band I discovered last week, pretty cool)
Sonic Youth
Souvenir's Young America
Sunn O)))
Thrice
Toby Driver
Underoath
Upsilon Acrux
Wes Montgomery

Old school jazz, jazz fusion, classical, post hardcore, avant garde, some pop punk/emo/alt (Paramore) , post rock as well as some prog rock.
 
Lately I'm digging some of the darker dubstep. And dark drum n bass always has a place. Also venetian snares.