Andrew over at WellMedicated has a great post of 50 Amazing Gig Posters — here are a few that I especially liked (I loved them all, actually). Be sure to check out the rest here. Via ffffound.
From top to bottom: Spoon by Strawberry Luna; Mates of State by The Small Stakes; Arcade Fire by Mike Weihs; Peter Bjorn & John by Methane Studios; José González by The Small Stakes; Futureheads by UglyBogus; My Morning Jacket by Andrio Abero.