I've not done much with Perl lately. Been focusing on PHP/MySQL at the moment, although I did write a perl script that calls up a specific fortune file and uses it as a 404 error page. You can't even tell that I'm calling a CGI either, it's fairly cool that way. I'm thinking of using some absolute URLs to spiffy up the error document, perhaps by adding a picture or something.
I do have a directory full of images that I could also pull up with my script and have displayed. I grabbed them from the Duke3D guys. They have some wacky 404 error images.
Um, okay, that's it.