ZUG claims to be the oldest comedy site on the web, a fact that I can neither verify nor disclaim. In any case, it really doesn't matter because they get major props for their elaborate and compelling pranks.
I started out with the credit card prank, which is as hilarious as it is insightful. I'm slowly working my way down the rest of the list. So far, every one is proving to be a great read.
[Thanks to my neighborhood blogger, Emily, for this tidbit.]