When I prepared the talk for the .Net User Group, I realized that the TAP infrastructure can be (mis-)used for some cool things, that would be not so easy without that features.
I finally found the time to write a short article about using the TAP to write an easy wrapper for the .Net Ping class. You can find the article at CodeProject:
Continuous asynchronous Ping using TAP and IProgress in C#5
If you find that useful or have any other ideas for cool features using TAP please let me know.
