Week of 06/07/2009 - 02:00 to 06/14/2009 - 01:59
On CPAN there are few options for reactive, event-driven programming, POE being just the most prominent one.
One hidden gem in this category is IO::Lambda. Given that it uses strongly a functional paradigm and continuations it will probably alienate most procedurally wired brains. The documentation and the examples are rich, but that itself presents a high entrance barrier.