If you like April Fool's Day, check out a site called the Museum of Hoaxes. They have all kinds of background on April Fool's Day, including stories of its origins, at least one of which turned out to be a hoax itself.
You can take an interactive quiz to see how good you are at separating pranks--like the story of sharks being bred in a Michigan lake--from the weird but true--like reports of an electrical plant powered by chicken manure.
Some of the most successful April Fool's jokes in history have been perpetrated by the media. Sports fans may recalls Sidd Finch, the barefoot miracle Mets rookie who could reportedly pitch a baseball at 168 miles per hour. And in what some have rated the greatest gag of all time, thousands of BBC viewers were taken in by a 1957 TV story about a great year for the Swiss spaghetti crop.
Of course, the media themselves have been taken in from time to time, such as when notorious prankster Joey Skaggs issued this release announcing the 15th annual April Fool's Day parade. At least two TV news teams showed to cover the nonexistent festivities.
The foolery is only likely to increase as today, the web itself has become a medium for perpetrating pranks. Want a job at Google's new lunar research facility? They says they've had enough resumes to last them till April 1, 2104.
And on this slickly designed corporate site, you can learn all about the Atlantic Tunnel, set to open in 2009 for swift travel between the US and UK under the ocean. The site is so serious, unsuspecting browsers get taken in till they sign up for a chance to ride the first train.