CORY MONTEITH, 31
"I don't want kids to think it's okay to drop out of school and get high, and they'll be famous actors, too," Monteith once said about being a troubled role model who first entered rehab at age 19. In 2013, the adored Glee star with the swoon-worthy voice and boyish good looks again sought treatment for substance abuse. Just months later, on July 13, 2013, Monteith was found dead at 31 in a Vancouver hotel room. "Have no words," Monteith's costar Dot-Marie Jones Tweeted. "My heart is broken."