I bought some 100,000,000 Dinar notes in Serbia last week with Nicola Tesla on them -- I think I paid about $1 for the note, and apparently, this is the highest value that note ever had.
Currency: Zimbabwean dollar (ZWD)
Inflation rate: 3,714 percent and rising
Exchange rate: Officially, 250 ZWD per US$1; unofficially, as high as 750 ZWD to the U.S. dollar
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.