This module is AWESOME. I've used it in production and for some personal projects. It can do just about anything. Admittedly, the documentation is anemic, but there is a grass roots effort to create some formal documentation. Also, there is a Yahoo Group that is moderated by Alfred Reibenschuh where specific questions do get answered in a timely manner.
If you want to use Perl to create PDF files, I highly recommend this module. PDF is daunting at first, but once you get your arms around the basics of PDF building, this module is indespensible. It creates crisp, clean PDFs. I've compared the raw PDF output from PDF::API2 with that generated by Acrobat 6.0 Professional. In most cases, the PDFs from PDF::API2 are at least as good as the Abode versions, and they are almost always smaller, making them good for document storage and for web-served PDFs.