A - Architecture in Helsinki
B - Band of Horses
C - Clap your hands say yeah
D - Dandy Warhols
E - Explosions in the Sky
F - Faint
G - ??
H - Hot Hot Heat
I - Ima Robot
J - Joy Division
K - The Kinks
L - Ludacris :)
M - My Morning Jacket
N - The New ponrographers
O - Okkervil River
P - Panic! at the Disco (don't hate me)
Q - Queens of the Stoneage
R - Russian Futurists
S - Stars
T - Thunderbirds Are Now!
U - The Unicorns
V - The Vines maybe?
W - Wolf Parade
X - ??
Y - ??
Z - ??

A - ...And You Will Know Us By The Trail Of Dead
B - the Black Keys
C - Cap'n Jazz
D - Dresden Dolls
E - the Evil Harrisons
F - the Futureheads
G - Guillemots
H - Hot Hot Heat
I - I'm From Barcelona
J - Jeremy Enigk
K - Kaizers Orchestra
L - Libertines
M - Misty's Big Adventure
N - New Pornographers
O - Okkervil River
P - Pretty Girls Make Graves
Q - Queens of the Stone Age
R - Rise Against
S - Stars
T - Ten Foot Pole
U - ...
V - Voxtrot
W - Wintersleep
X - ...
Y - Yeah Yeah Yeahs
Z - Zebrahead

OK..here's me,,,

Avril Levigne
Beatles
Cure
Danzig
Everclear
Faith No More
Guns n Roses
Horrorpops
Incubus
John Mayer
Kylie Minogue
Lloyd Cole and the Commotions
Marilyn Manson
Nirvana
Oingo Boingo
Prodigy
Rob Zombie
Scritti Politti
TISM
Underworld
Van Morrison
White Stripes
XTC
Young MC
ZZ Top

LETS GO.

at the drive in
bloc party
cypress hill
damien rice
einaudi
frou frou
goo goo dolls
hot hot heat
incubus
josh rouse
kanye west
lady bouncer
metric
nine black alps
ordinary boys
patrick wolf
qotsa
radio dept
say anything
tears for fears
uo
von bondies
weezer
xiu xiu
yann tiersen
ziggy stardust (if that doesn't count, i'll say zutons)

A - A Tribe Called Quest
B - Billy Bragg
C - Can
D - Desmond Dekker
E - Elliott Smith
F - Frank Zappa
G - Godspeed You! Black Emperor
H - The Heptones
I - Iggy Pop
J - The Jam
K - The Kinks
L - Leadbelly
M - Marvin ***e
N - Nomo
O - The Originals
P - Peter Tosh
Q - I have a lack of Q's sadly.
R - The Replacements
S - Syd Barrett
T - Tom Waits
U - The Upsetters
V - Van Morrison
W - The Wailers
X - Xiu Xiu
Y - Yeah Yeah Yeahs
Z - Zounds
__________________

Im gunna make a new one.

Alexisonfire
Bright Eyes
Circa Survive
Decemberists, The
Elliott Smith
Fall of Troy, The
Godspeed You! Black Emperor
HORSE The Band
Iron & Wine
Jethro Tull
King Crimson
Linton Kwesi Johnson
Mars Volta, The
Nick Drake
Open, Parachute!
Protest The Hero
Queensrÿche
Rush
Sound of Animals Fighing, The
The Thirty Years War
Unicorns, The
Vanilla Fudge
Wintersun
YES
Ziggy Marley & The Melody Makers

Every couple of months on every forum they have his same thread but i can never resist....

here we go...

A - A perfect circle
B - Backyard Babies.
C - Circulus
D - Dragonforce
E - Eagles, the
F - Fleetwood mac
G - Guns 'n' roses
H - Hayseed Dixie
I - Iron maiden
J - Joy Division
K - Kataklysm
L - Lynyrd Skynyrd
M - Manic street preachers
N - Nickelback
O - Oasis
P - Primus
Q - Queen
R - Rise Against
S - Soundgarden
T - Therapy?
U - Ugly Kid Joe
V - Velvet revolver
W - Wildhearts, the

Adolescents (An Albatross)
Black Flag (Big Boys)
Circle Jerks (The Cows)
Dead Kennedys (Descendents)
Embrace (ESG)
Fugazi (The Fall)
Gang of Four (Gospel)
Husker Du (Helmet)
Indian Summer (Isis)
The Jesus and Mary Chain (The Jesus Lizard)
Kyuss (Killdozer)
Lungfish (Lightning Bolt)
Minutemen (Minor Threat)
NoMeansNo (The Nation of Ulysses)
Operation Ivy (Orchid)
Pere Ubu (Pixies)
Quicksand (Q and not U)
Reagan Youth (The Replacements)
Sonic Youth (Shellac)
Tom Waits (Tar Babies)
Universal Congress Of (Unsane)
Velvet Underground (Void)
Wire (The Wipers)
X (Xiu Xiu)
Yo La Tengo (Youth of Today)
The Zombies (Zounds)

well, that was exhausting. 'B' and 'M' are my hardest letters. So many options!

A - Aphex Twin
B - Babyhead
C - Capdown
D - Dresden Dolls
E - Eels
F - Flogging Molly
G - Gomez
H - Herbaliser
I - Iggy Pop
J - Jimi Hendrix
K - Kimya Dawson
L - Led Zeppelin
M - Morcheeba
N - Neil Young
O - Orbital
P - Portishead
Q - Quantic
R - Roots Manuva
S - Slayer
T - Tool
U - Uncool
V - Velvet Underground
W - Wagon Christ
X - XTC
Y - Yuri lane
Z - Zero 7

can't think of u, v and x
 

a - at the drive in
b - the bats
c - the chills
d - dead pan rangers
e - electric six
f - fat freddy's drop
g - the gills
h - hdu
i - inchworm
j - jose gonzalez
k - kraftwerk
l - led zeppelin
m - meat puppets
n - nirvana
o - beth orton
p - pink floyd
q - queens of the stoneage
r - rodriguez
s - the shrugs
t - the tea party
u - ?
v - ?
w - white town
x - ?
y - neil young
z - zero 7