My credit card company's website has a very long list of possible security questions to choose from, the most exciting of which is probably: What is your favorite element on the periodic table?
I am somewhat ashamed to tell you that I have never given the periodic table much thought, much less chosen a preferred element, although I very much like that this question seems to presume that maybe I have. Do such people exist? Who are they, and what are their favorite elements? I would certainly like to know.