In health insurance, what does HMO stand for?

What is an Italian countess called, like the "Barefoot" one in the 1954 Ava Gardner film? Which type of lamp is powered up by a ballast? Which large snake may be reticulated? Which word names both a type of lizard and a computer screen? Which orange-fleshed melon is named after a former papal estate near Rome? Which word names both a type of music and just plain people? Which word names both a type of mustache and a bicycle's steering bar? A type of investment swindle is named for which con man who ran it in the 1920s?