Aside from the Microsoft documentation, is there a good introduction and tutorial to the Microsoft Reactive (Rx) framework?
Also, what is a good example (with code) that Reactive makes easier of a programming problem that is challenging to solve using conventional asynchronous coding techniques?
UPDATE: The blog posts below have been superseded by my online book www.IntroToRx.com. It is a comprehensive 19 chapter book available for free. You can browse it on the web, or download the mobi version for your kindle. You can also get it direct from Amazon for a tiny fee (~99c / 77p). If the book doesn't meet your needs or expectations, let me (the Author) know and we will do better for v2.
Thanks for the link to the Hot/Cold post. This is only one part of the full series,
I will keep updating this blog with more Rx introductory stuff.
For more advanced stuff you want to go to the Rx Forum (MSDN).