Every year, my neighbor dresses like a caveman for Halloween, but I've never asked if he's Geico branded. I already know he's a garden-variety Neanderthal and that has nothing to do with his costume. And anyway, he never talks about saving me 15 percent on insurance while wearing that crazy wig and off-the-shoulder dress. But an outfit called the Promotional Products Association International would probably put him in the ridiculous-getup-as-marketing category. This non-profit group released a dubious list of top brand-inspired costumes, and the Geico caveman and/or gecko landed in the middle of it. Sounds fishy, yes? The caveman, maybe, but the gecko? Wouldn't you have to be really small for that disguise? Beyond that, I'll believe UPS delivery guy, Captain Morgan and the always-terrifying Burger King are popular. Less likely? M&Ms and Tony the Tiger. And straining credulity? Travelocity's Roaming Gnome, which tops PPAI's list. Seriously, if you spot one of those this weekend, take a picture and send it to us. Meanwhile, the Wall Street Journal notes that MTV's runaway hit Jersey Shore has spawned the most popular costumes for 18-to-24-year-olds this year. Snooki and the gang, with their bronzed skin, tiny clothes and giant hair, will be everywhere. Don't bother to capture those on film—we don't want to see those horrifying doppelgangers after Nov. 1.