Few musicians have inspired the amount of controversy as late Anal C--- frontman Seth Putnam. Always rooted in morbid humor and shock tactics, AC were one of the innovators of the grindcore and noise sub-genres of extreme metal. Putnam was never shy to speak his mind or to address his heavy drug use, which put the frontman into a coma in 2004. Putnam succumbed to heart failure on June 11, 2011, at the age of 43.