ANSWER
David Bradley invented the Ctrl-Alt-Delete key sequence used to re-boot the IBM PC.
Bradley, one of 12 IBM engineers working on the original IBM PC in 1980, spent about five minutes writing the code to implement the now-infamous "three-fingered salute". He retired from IBM last week after a 28 year career with the company.
WHO GOT IT RIGHT: Pete Daggett, Duke Duquette, Kathi Reynolds, Marc Quinlivan, Bob Milligan, Andie J, JP Weigt, Moana Kutsche, Corey Tracey, Brett, Allan Christensen, David Evans, Iron Saul, and Ryan Scannell.
