numophylacium gave me flight of ideas, a symptom of mania or psychosis! But the only mania I have is a mania for ancient Roman coins! L. Cupiennius, 147 BC. Roman Republican AR denarius, 3.89 g, 17.7 mm, 3 h. Rome, 147 BC. Obv: Helmeted head of Roma, right; cornucopiae behind; denominational mark X before. Rev: Dioscuri galloping right; L·CVP (VP ligatured) below; ROMA in exergue. Refs: Crawford (RRC) 218/1; RSC Cupiennia 1; Sydenham (CRR) 404; RCV 94. Cupiennius happens to be the the name of a genus of banana spiders, so that's mostly what you get when you Google it. But there isn't much about the dude known as "L. Cupiennius" because he is a Roman "Republican moneyer, known only from his coins." According to the Portable Antiquities Scheme, anyway. So then I found myself reading about the Dioscuri -- because they are on the reverse of my coin. Now, I knew from mythology that they were Castor and Pollux, the gods of horsemanship placed in the heavens as the constellation Gemini. But I did not know that they -- and not Rob Lowe, Emilio Estevez, Judd Nelson and Andrew McCarthy -- were the gods of St. Elmo's fire! Which in turn gave me a John Parr earworm! And now I have mediocre mid 1980's dance-rock running through my head! So, I went from a Roman Republican denarius to spiders to the Dioscuri to astronomy to St. Elmo's fire to 1980's movies and music. Post your Dioscuri coins or coins that make you fly from one idea to another!!