Steve Jobs (1955-2011)
From apple.com/stevejobs :
Apple has lost a visionary and creative genius, and the world has lost an amazing human being. Those of us who have been fortunate enough to know and work with Steve have lost a dear friend and an inspiring mentor. Steve leaves behind a company that only he could have built, and his spirit will forever be the foundation of Apple.
Check out Steve Jobs last public appearance at Apple’s WWDC 2011 back in June 2011