Steve Jobs was a visionary product designer who revolutionized the computer world with much-loved products like the iPod, iPhone and iPad, but in 2011 he died of a treatable cancer.

Gary Coleman soared to success in the hit 80's TV show, "Diff'rent Strokes,'' but at the height of his fame he was plagued by health problems and when his career stalled he hit the headlines for all the wrong reasons.