My absolute favorite framework I've ever worked with is Akka.NET and how it taught me how to operate against concurrency in a different way. Actor-based infrastructures and other Erlang-inspired concepts are really just wonderful and they need a whole lot more attention, yes!
I worked for a long time with Akka and Scala and share the same sentiment. It packed so much power and yet felt so intuitive. Now every time I pick up a new language I instinctively look for an Actor based framework in it.
