Silverlight and ReactiveExtensions article:
http://blog.scottlogic.com/2010/12/02/exploring-reactive-extensions-rx-through-twitter-and-bing-maps-mashups.html

My Ray Wenderlich author page, contains quite a few ReactiveCocoa and MVVM articles:
http://www.raywenderlich.com/u/ColinEberhardt

ObjC block syntax - say no more!
http://fuckingblocksyntax.com

Twitter app with sentiment analysis
https://github.com/ColinEberhardt/ReactiveSwiftLondon

Stack Overflow question regarding fluent interfaces in ObjC:
http://stackoverflow.com/questions/3124001/fluent-interface-pattern-in-objective-c

Demonstration of pipe forward operator:
https://gist.github.com/ColinEberhardt/b4bf4e4566ffa88afcda

Any question? Add a comment below!