Since April Fool's Day fell over the weekend, its effect was not as widespread as in years past, but there was still a good deal of Interweb activity. Wikipedia does a good job summarizing this year's pranks. One of my favorites was MAFIAA:

Motion Picture Association of America, Inc. (MPAA) chairman Dan Glickman and Recording Industry Association of America (RIAA) president Cary Sherman today announced the historic merger of the two organizations. The newly-created entity is being called the Music And Film Industry Association of America, Inc.

That one probably fooled no one, and it's not quite farfetched enough to be all that funny...

By the way, a belated birthday wish to April Fool Sir Bias, who has yet to make his blogging debut despite my frequent entreaties... ;-)