Not crewroom names, I'm afraid, but when I worked in MOD we had a scientist whose surname was Lemmer. It took me a long time to realise that he wasn't Welsh, and that his first name was Bill, rather than Dai.
In a later job we had a colleague who was wont to ensnare people in long rambling conversations. He was known as the Black Hole - incredibly dense, and impossible to get away from...