Zimbabwean dollar
The Zimbabwe government redenominated the ZWD again on February 2, 2009 at a rate of 1,000,000,000,000 old ZWD to 1 new ZWD.
Are they kidding, this is like a curely joke on the people of that country. It might make more sense to sell the money as scrap paper and the melt the coins for scrap metal. The arbitrage profit might even make that a viable business.