I like your icon! Are you sure it's safe to use, though? :)

I didn't mind the Device of the cubes, but I don't see the point of the perpetual motion one. It seemed a bit tacked on to me.

Hmm. Perhaps "Head-Banger" is the sort of name that you'd make an effort to keep secret from your girlfriend?

Yes, you're right about Fred's new job. And I bet A.E. Pessimal was planned by Vetinari to the last detail.