George C. Scott
His career was huge, respected and ultra-successful, but in death he's relatively understated. George C. Scott appeared in many acclaimed films, including "Dr. Strangelove" and "The Hustler." He's arguably best known for his portrayal of legendary Gen. George S. Patton, although he famously rejected an Academy Award thanks to his disdain for the awards process [source: BBC].
After he died in 1999 of a burst abdominal aneurysm, Scott was buried in an unmarked plot in Westwood Memorial, a stone's throw from fellow anonymous grave-dwellers Roy Orbison and Frank Zappa [source: Los Angeles Times].