I'm often curious as to exactly what people were thinking when they chose their username, in particular. For those who want to, tell us all what your username actually means, and while you're at it, what/who/where/etc your avatar is. I'll go first, seeing as it's my thread.
I'm always really bad at choosing usernames for anything, but at the time I was signing up I was thinking of the old Monty Python game for the Amiga. It was a platform game, and if you managed to collect sixteen of the little tins of spam hidden about each levels, you got a bonus of some kind. The Spam - Monty Python connection is obvious, but why you had to collect sixteen of the tins is a mystery.
Anyway, it's a lame username, and I've wished I could change it about a hundred times since.
My avatar is Calvin of Calvin & Hobbes fame, in the guise of one of his many alter-egos, Spaceman Spiff.