It would be sort of sad for programmers to not know who Drucker was, since he's the guy who coined the term "knowledge worker" to name the class of job roles that encompasses programmers (and also a large percentage of the people who use computers and software in the business world).

(See http://en.wikipedia.org/wiki/Knowledge_worker.)

What language did he create?

Really.

Allow me to rephrase:

Aside from being a guy who played fast and loose with facts and was awarded a medal by a president who couldn't be bothered with facts, what solid contribution did this Drucker guy make to the art and science of programming?