Introduced myself to Gogol Bordello live a week ago. Just as good as everyone here's been saying!
NIN, yeah, With-Teeth tour once in Denver with Dresden Dolls (also kick-ass) and Lights in the Sky twice, including at Red Rocks. Mind blowing. Also saw the Smashing Pumpkins at Red Rocks, but their 20th anniversary tour show in St. Louis was better.
Caught Massive Attack in Denver as well, WITH Horace Andy and Liz Frasier. I was ecstatic.
Sigur Ros were also amazing, that was probably in 2005, 2006? Well before they changed to their stripped down, "acoustic" style, which I don't enjoy as much. It was beautiful and epic.
Meat Beat Manifesto put on a fantastic multi-media show, do not miss them if you have the chance.
Also, if you're into the Americana folk-rock singer/songwriter sort of thing, if you want a band you can drink wine to while falling madly in love with the vocalist, never miss a chance to see a group from Ohio called Over the Rhine. They are a genius husband-wife team with an amazing touring band who have been at it for twenty years now. They never disappoint.
Best gig I ever went to bar none was the Beta Band in Edinburgh. I think back in 98.
I saw Arcade Fire last year, I'm not a fan, but my good lady loves them and they put on a brilliant show.
Only gigs I've seen this year was Jarvis Cocker, I'm a huge fan but I left about an hour in because the sound was fucking awful, I'd been up for days and I had a flight to the other side of the planet 6 hours later and a local band called Stage Blood, who were really really impressive and reminded me of somewhat of Fugazi.
it has been said many a time here, but it is worth repeating: if you are ever in the position to do so, go see The White Ghost Shivers. it is one of the few bands of the probably far too many i have seen that will get just about anyone dancing.
@Jeff Super 8-Bit FOUR Piece, actually. And they elected to go drink beer instead of eat spaghetti (too late for homemade pizza). But Ideamen crashed here, that was cool. And I'll know to invite you next time. :P