mod_perlite is a very interesting project which aims to create a lightweight Perl module for Apache which can compete in the market range where PHP dominates.
The project already has something which actually works, but which needs to be polished. If you can and want to help, take a look at the web site!
Italian: per gli italiani, qui c'รจ un articolo in merito.
I posted a more extended article on PerlBuzz:
http://perlbuzz.com/2009/07/mod-perlite-helps-perl-gain-ground-in-the-php-arena.html
Michele.