CNETNate writes "Is the American mains socket really so much worse than the Italian design? And does the Italian socket fail at rivaling the sockets in British homes? This feature explores, in a not-at-all-parodic-and-anecdotal fashion, the designs, strengths and weaknesses of Earth's mains adapters. There is only one conclusion, and you're likely not to agree if you live in France. Or Italy. Or in fact most places."
(For more plug pics and details, check out Wikipedia's list of the ones in current use