Bill Hammack, The Engineer Guy, takes apart a copy machine for great justice—and to better explain how it works. The way to this girl's heart is through the guts of major appliances and the clever use of James Thurber jokes. Cheers, Dr. Hammack!
Maggie Koerth-Baker is the science editor at BoingBoing.net. She writes a monthly column for The New York Times Magazine and is the author of Before the Lights Go Out, a book about electricity, infrastructure, and the future of energy. You can find Maggie on Twitter and Facebook.