Cacher is the code snippet organizer for pro developers

yapc talks this week.

XS Fun
https://www.youtube.com/watch?v=sD1-bgKm36c

The Perl API for the Mortally Terrified 
https://www.youtube.com/watch?v=-XITNDvqoTo

Foreign Function Interface (FFI): Never Need to Write XS Again 

https://www.youtube.com/watch?v=cY-yqQ_nmtw

like you said in your last post, you learn it because you have to. 

The biggest problem for me to learn XS is there is not a real need.