From USA Today

Inventor Of Ctrl-Alt-Delete Combo Retiring
RESEARCH TRIANGLE PARK, N.C. (AP) ? David Bradley spent five minutes writing the computer code that has bailed out the world’s PC users ever since.
He programmed one of the most well-known key combinations around: Ctrl-Alt-Delete. It forces obstinate computers to restart when they no longer follow other commands. “I didn’t know it was going to be a cultural icon,” Bradley said. “I did a lot of other things than Ctrl-Alt-Delete, but I’m famous for that one.”

Not surprisingly, inventor of Blue Screen Of Death still trying to keep it on the DL.