Researching material for a lecture on Unix administration, I came across Doug McIlroy, famous for co-inventing diff, Unix pipelining, and other important things.

I found a web page which lists what Doug can do. Some examples:

• Doug McIlroy spawns Init
• Doug McIlroy invented diff to win a bet
• Doug McIlroy supervises the hypervisor
• Doug McIlroy doesn't have an Erdős number; Erdős has a McIlroy number