Yes, King Crimson, Deep Purple, Led Zeppelin, The Who, Gentle Giant, The Beatles.

Dandy Warhols, The Vines, Arctic monkeys, Muse. And some more.

Rush
Rush
Rush
Rush
...
Dream Theater
Yes
Queensryche
Rush
Eric Johnson
Joe Satriani
Rush
Marillion
Journey
Van Halen
Def Leppard
Rush

Tom Sawyer, we certainly could guess by that blue Harfang!

Carcass, Judas Priest, Arch Enemy, Misfits, Megadeth, and of course The Beatles.

Yeah thats the fly by night album cover owl, isn't it?

Yes.

I like them, but I wouldn't include them here because there's a difference between bands and backup bands.

My favorite band?  Why, this, of course:

Those are some cool music choices.

Already listed my top 5 but I'm not seeing a whole lot of activity on this post so I'm gonna give it a bump by listing honorable mentions since music is a hobby of mine (listening; not playing).

36 Crazyfists ("The Tide and It's Takers" is a great cd.  Alaska finally has a premiere group!)

Slipknot (Need I say more?)

Rise Against (Their early stuff was great)

Flogging Molly (Traditional Irish music with a punk kicker)

Dry Kill Logic (Paper Tiger kicks ass)

Brother Ali (His early stuff has unconventional beats similar to Atmosphere.)

All That Remains

Aesop Rock (More underground hip hop with abstract lyrics that make you think and deliver something different every time you listen)

Good choices.. i love progressive or classical rock as well. Especially Yes, but all bands you listed are great.

Draconian, Dimmu Borgir, Norther, Ablaze in Hatred, The Elysian Fields (Greece), Darkseed, Callenish Circle, Zonaria, Neaera, Disturbed, Lacrimas Profundere, Lamb of God, Insomnium, Hypocrisy, How Like a Winter, Rotting Christ, God Dethroned, Funeral, Forest Stream, Evemaster, Eternal Tears of Sorrow, Dark Tranquility, Agathodaimon, Whitechapel, All Shall Perish, Anthemon, This Ending, Tristania, Vesania. 

Well that's a lot if I do say so myself, but wait there's more! 

Actually that's more than enough.

Dave Matthews Band

Strunz & Farrah

Jethro Tull

Guns'n'Roses

Led Zeppelin

Boston

The Doobie Brothers

38 Special

James Taylor

Los Lonely Boys

K.C. & The Sunshine Band

Kansas

Lynyrd Skynyrd

Pink Floyd

Van Halen

Spinal Tap