I know it's old news by now, but the posters on The Hurrican Poster Project site continue to amaze me. I just wish the design world would have done something similar for the tsunami at the end of 2004. I particularly like Laurie Demartino's poster, and she happens to be a Minneapolis resident.
Looking through Step's 2005 print design annual, I came across Justin Walsh's work. His site Resist Imposters has a lot of really great band related design work. His mixture of dada typography and surreal combinations of old engravings and woodcuts is awesome. I especially like his Black Keys posters.