Here's my obligatory (and faithfully unabridged) list of artists with Last.fm pages that I have seen live.
Ladytron --
Roseland Theater, Portland, OR
The Faint -- Roseland Theater, Portland, OR
Crocodiles -- Roseland Theater, Portland, OR
ohGr --
Dante's, Portland, OR
Weezer --
Key Arena, Seattle, WA
Angels and Airwaves -- Key Arena, Seattle, WA
Tokyo Police Club -- Key Arena, Seattle, WA
Sigur Rós --
Arlene Schnitzer Concert Hall, Portland, OR
Parachutes -- Arlene Schnitzer Concert Hall, Portland, OR
The Bug --
Rotture, Portland, OR
Warrior Queen -- Rotture, Portland, OR
Laibach --
Crystal Ballroom, Portland, OR
Jedi Mind Tricks --
Hawthorne Theatre, Portland, OR
Sandpeople -- Hawthorne Theatre, Portland, OR
Living Proof -- Hawthorne Theatre, Portland, OR
Gray Matters -- Hawthorne Theatre, Portland, OR
Del tha Funkee Homosapien -- Roseland Theater, Portland, OR
Bukue One -- Roseland Theater, Portland, OR
The Cool Kids -- Roseland Theater, Portland, OR
Cool Nutz -- Roseland Theater, Portland, OR
Soriah -- Rotture, Portland, OR
Soriah --
Mt. Tabor Legacy, Portland, OR
Assemblage 23 --
Berbati's Pan, Portland, OR
Son of Rust -- Berbati's Pan, Portland, OR
Dawn of Ashes --
Fez Ballroom, Portland, OR
Particle Son -- Fez Ballroom, Portland, OR
Combichrist -- Hawthorne Theatre, Portland, OR
Imperative Reaction -- Hawthorne Theatre, Portland, OR
Modulate -- Hawthorne Theatre, Portland, OR
Written in Ashes --
Outlaws, Portland, OR
Sunn O))) -- Mt. Tabor Legacy, Portland, OR
Earth -- Mt. Tabor Legacy, Portland, OR
Weedeater -- Mt. Tabor Legacy, Portland, OR
VNV Nation -- Hawthorne Theatre, Portland, OR
Babyland -- Hawthorne Theatre, Portland, OR
Front Line Assembly -- Crystal Ballroom, Portland, OR
Abney Park -- Crystal Ballroom, Portland, OR
Skinny Puppy -- Crystal Ballroom, Portland, OR
Zombie Girl -- Crystal Ballroom, Portland, OR
The Red King -- Fez Ballroom, Portland, OR
Reliquary -- Fez Ballroom, Portland, OR
Go Like Hell -- Dante's, Portland, OR
Dragstrip Riot -- Dante's, Portland, OR
Peeping Tom --
Wonder Ballroom, Portland, OR
Pigeon John -- Wonder Ballroom, Portland, OR
Written in Ashes --
Sabala's Mt. Tabor, Portland, OR
Stalking Jane -- Sabala's Mt. Tabor, Portland, OR
James D. Stark -- Sabala's Mt. Tabor, Portland, OR
Mortal Clay -- Sabala's Mt. Tabor, Portland, OR
!Go-Yo! -- Sabala's Mt. Tabor, Portland, OR
Sinnergy -- Dante's, Portland, OR
The Freemartins -- Dante's, Portland, OR
Drumattica -- Fez Ballroom, Portland, OR
KMFDM -- Wonder Ballroom, Portland, OR
Combichrist -- Wonder Ballroom, Portland, OR
BLACK:JAPAN -- Wonder Ballroom, Portland, OR
Covenant -- Hawthorne Theatre, Portland, OR
Imperative Reaction -- Hawthorne Theatre, Portland, OR
Rotersand -- Hawthorne Theatre, Portland, OR
Ministry -- Roseland Theater, Portland, OR
Revolting Cocks -- Roseland Theater, Portland, OR
Pitbull Daycare -- Roseland Theater, Portland, OR
Editors -- Dante's, Portland, OR
stellastarr* -- Dante's, Portland, OR
Monsters Are Waiting -- Dante's, Portland, OR
The Sisters of Mercy -- Crystal Ballroom, Portland, OR
KoЯn --
Rose Garden Arena, Portland, OR
Mudvayne -- Rose Garden Arena, Portland, OR
10 Years -- Rose Garden Arena, Portland, OR
Jim Gaffigan --
Aladdin Theater, Portland, OR
She Wants Revenge -- Berbati's Pan, Portland, OR
Climber -- Berbati's Pan, Portland, OR
Astra Heights -- Berbati's Pan, Portland, OR
My Life with the Thrill Kill Kult -- Dante's, Portland, OR
Space Vacuum from Outer Space -- Dante's, Portland, OR
Smoochknob -- Dante's, Portland, OR
Nine Inch Nails --
American Airlines Center, Dallas, TX
Queens of the Stone Age -- American Airlines Center, Dallas, TX
Death From Above 1979 -- American Airlines Center, Dallas, TX
The Crüxshadows --
The Dart Room, Fayetteville, AR
Ego Likeness -- The Dart Room, Fayetteville, AR
The Last Dance -- The Dart Room, Fayetteville, AR
Simple Shelter -- The Dart Room, Fayetteville, AR
Kings of New England --
Dickson Street Theater, Fayetteville, AR
White Whale -- Dickson Street Theater, Fayetteville, AR
Benjamin del Shreve -- Dickson Street Theater, Fayetteville, AR
Split Lip Rayfield --
George's Majestic Lounge, Fayetteville, AR
Ween -- Dave's on Dickson, Fayetteville, AR
Bone Pony -- Dave's on Dickson, Fayetteville, AR
The Dirty Dozen Brass Band -- Dave's on Dickson, Fayetteville, AR
Erasure --
The Joint,
Las Vegas, NV
Cooler Kids -- The Joint, Las Vegas, NV
Mr. Show --
McDonald Theatre, Eugene, OR
Styx -- Douglas County Fairgrounds Amphitheater, Roseburg, OR
No Doubt -- Rose Garden Arena, Portland, OR
Weezer -- Rose Garden Arena, Portland, OR
Ednaswap -- Rose Garden Arena, Portland, OR
Blue Öyster Cult -- Jackson County Fairgrounds, Central Point, OR
D.O.A. -- Sweet Acres, Medford, OR
Sweaty Nipples -- Sweet Acres, Medford, OR
Nirvana -- Compton Arena, Central Point, OR
Butthole Surfers -- Compton Arena, Central Point, OR
Chokebore -- Compton Arena, Central Point, OR
Bobcat Goldthwait -- Compton Arena, Central Point, OR
Cherry Poppin' Daddies -- Old Ashland Armory, Ashland, OR
Pat Benatar -- Josephine County Fairgrounds, Grants Pass, OR
Bachman-Turner Overdrive -- Josephine County Fairgrounds, Grants Pass, OR
Three Dog Night -- Josephine County Fairgrounds, Grants Pass, OR
La Toya Jackson -- Jackson County Fairgrounds, Central Point, OR
"Weird Al" Yankovic -- Jackson County Fairgrounds, Central Point, OR
Marky Mark and The Funky Bunch -- Jackson County Fairgrounds, Central Point, OR
Reliquary