Mitch Hedberg, 37 Years Old
Hedberg, best known for his deadpan sense of humor and works like "Strategic Grill Locations," propelled him into comedic relevancy. His fans were often too excited to let him finish his jokes before they beat him to the punchline. He was a drug user and that was a relevant theme among his material. He died of an accidental heroin overdose in 2005.