PerlHP is an attempt to give Perl the same simplicity and hackiness that PHP has spent years trying to forget. It lets you put together simple dynamic web pages more quickly than writing them in plain Perl, and with less mental anguish than writing them in PHP. It is also cheerfully obfuscated, but luckily you don't need to actually look at it to use it.
PerlHP started out as a joke, but it did turn out to be useful - for instance, I wrote this page using it. It can reduce both PHP and Perl programmers to incoherent rambling, which I also view as a success.
It has its own homepage. Visit it for more information!