“1984: Michael Jackson burned in Pepsi ad
Michael Jackson has received hospital treatment for serious burns to his head after his hair caught light during a freak filming accident.
The 25-year-old entertainer was singing his hit "Billie Jean" for a Pepsi Cola commercial in Los Angeles when the special effects went wrong.
Three thousand fans saw a firework display erupt behind the superstar, showering him in sparks and setting light to his hair.”
http://news.bbc.co.uk/onthisday/hi/dates/stories/january/27/newsid_4046000/4046605.stm
After this incident he has been taking painkillers, but soon the medication became an addiction. He overdosed on the painkillers and soon led to his death.