Carl and Richard talk to Bart de Smet about the beta of Reactive Extensions (Rx) Version 2. Currently in beta when the show was recorded, Rx 2.0 works with .NET 4.5, both for desktop and metro, as well as Silverlight 5 and Windows Phone 7.1. Bart talks about how Rx lets you write LINQ expressions over top of events, completely changing the way you think about responding to events. If you're tired of cluttering up your UI code with event handlers or you've got a back end process that needs to deal with millions of incoming events, you owe it to yourself to look at Rx!