The best sign I ever brought was one that simply said "John Cena" with a big heart replacing the O. At the height of Cena hatred in late-2006. My brother brought one to the same show that had "John" at the top and "Cena" at the bottom with a crude drawing of a pile of crap in the center.
12/27 -- Unearth/Protest the Hero
03/07 -- Video Games Live
07/06 -- U2