This looks brutal, for a lot of people John Reppy's book Concurrent Programming in ML (as in SML not Machine Learning) is going to be much more accessible. Pick the CSP-style library in the programming language of your choice.

Go with goroutines and channels

Clojure with core.async

F# with Hopac

It would be a very interesting project to roll your own in C# using Microsoft Robotics Studio's CCR (Coordination and Concurrency Runtime) (though I speculate those are buffered channels by default).