The software powering this web site is written in Perl. Looking at a CVS version, counting only the .pm files, not code embedded in nodes but including comments, there are over 30,000 lines of code. Any way you slice it, that's more than 10,000 lines.

Having worked on it, I'm happy to report that not only does it do its job well, there are bits in the code that cannot be done in most other languages. Perl can be used to drive real world projects, and some of those include web sites.