I used to be lighting designer / operator for VideoCabaret Internation / The Hummer Sisters ( who later ran for mayor of Toronto ). D.Anne Taylor suggested I use Tom Lux in the program ... lux is Latin for Light, after all.

I gave that name one time when I didn't want to give my real name, and the person asked if my middle initial was 'D'. Five minutes later, when I figured out the joke, it was.

I've used the nick on IRC and other places since leaving theatre ... very convenient, no collisions, ever