If you haven't heard of this guy, then your seriously missing out. My friend showed me a video of him the other day. such a nut case but a fucking badass. Died of a heroin overdose a few years ago.
"Allin is best remembered for his notorious live performances that typically featured wildly transgressive acts such as Allin defecating and urinating onstage, rolling in feces and often consuming excrement, committing self-injury, performing naked, and committing violent actions toward the audience—often doing many of these things simultaneously."
check out this video