Nofx and the vadals are tried and true. at the drive in can be considered punk, im an fan of old offspring, dead kennedys, misfits, dead milkmen, some no use for a name, voodoo glow skulls, pennywise, . you might like sleater-kinney or taking back sunday too. they're pretty leany towards emo. and by that i mean they are.
http://www.trashsurfin.de/ is a good place to look for what suits you...