I must admit my stack is outdated, I still use CGI::Application, though I love Moose. I haven't kept us since catalyst, etc started to appear. CGI::Application works really well for me.
The other day I implemented push notification and geolocation bases functionality for a client in a couple of days.
To them it looks like magic, but to me it's just awesome that there are libraries in cpan to do just about everything making it a real time saver.