I recently got the chance to record a screencast discussing REST-oriented web services in WCF. If you’re interested in WCF you should definitely check it out because WCF and REST make an awesome combination.
I cover building WCF services using REST princples, the WebGet and WebInvoke attributes, working with the SyndicationFeed & Rss20FeedFormatter classes, and configuration-free WCF hosting in IIS.
You can also download the source code of the project built in the screencast.
Finally, if you’re willing to do without video you can download just the audio as an MP3.