During OSCON, you can get Randal’s Schwartz’s Learning Perl Video Series for $74.99 (50% off). This is the same class that Stonehenge presents to its corporate clients, based on Learning Perl (or, more correctly, the book is based on the class).
You can also get the Programming Perl ebook for $19.99 (50% the list price) when you buy it through the open source geeks promotion or by using offer code CFOSCON.