Halloween, our annual celebration of the scary, has long been a showcase for ghost costumes and vampire teeth. But Barbie and Spider-Man are amongst this year’s top pop culture-inspired costumes.

There are many other Halloween costumes to choose from, especially for couples. There is a "Flamin' Hot Cheetos Bag," a "Soap and Loofah," and a "Peanut Butter and Jelly." ...