Pick your favorite common name: yellow garden spider, black & yellow garden spider, common garden spider, orb weaver, Argiope aurantia...
Don't care what you call her except wonderful: that sure looks like a green head fly to me. (Ok, so it has green eyes, not a green head. Whatever. That's what it is commonly called. And if you don't understand my rejoicing, you've never been to the Mid-Atlantic coast in summer.)
Look up. She's got a not-so-little secret tucked up there above the window frame.
UPDATE: She's gone, but she left a little something else to remember her by...
