In addition to the yearly [Perl Advent Calendar](http://www.perladvent.org/2008/) from Jerrad Pierce, originally started by Mark Fowler, the Catalyst Team have put together their own [Catalyst Advent Calendar](http://www.catalystframework.org/calendar/).
Each calendar gives a new tip or trick or module to use each day. [Today’s tip](http://www.perladvent.org/2008/8/) on the Perl Advent Calendar is about how to use IPC::Filter to communicate between processes, while [yesterday’s entry on the Catalyst Advent Calendar](http://www.catalystframework.org/calendar/2008/9) discusses how to create PDFs for your web application.