Ketchup on a hot dog??

Cecil, over at The Straight Dope, gives the smackdown on people who think ketchup belongs on a hot dog (or, in his line of thinking, on food products of any sort). As he so eloquently puts it...

People get pretty emotional over the ketchup question. Mel Plotsky opened our discussion by describing the condiment as a "catchall of garbage." Over at crosstown rival Vienna Sausage, they refer to ketchup as the "K-word." If you go into an authentic hot dog joint and ask for ketchup on your hot dog, the counterman will pause and look you in the eye. He may or may not say, "Ketchup?" with a tone of disbelief. But you may be certain what he's thinking: "Behold this creature that walks like a man. It wants ketchup on its hot dog."