GWAR

Who: Men in giant rubber costumes that spew blood and ejaculate on unassuming audiences -- and also play heavy metal.
Hometown: Richmond, Virginia, via Antarctica, and your nightmares
Why you should see them: They've been at it for 25 years, but if you haven't seen the guitars'n'gore spectacular that is a GWAR show, why wait any longer? And don't you want to see which celebrity effigies they disembowel onstage?! Previous victims include Paris Hilton, George W., and Osama bin Laden.