Tonight I gave a presentation at PDX CocoaHeads on RestKit, a RESTful object mapping framework for iOS and OSX. RestKit has proved extremely useful in connecting BeatMatch, my forthcoming iPhone app, to a my Ruby on Rails web app. It also boasts an enthusiastic community that has graciously responded to questions merged in a few of my pet features. Here are the slides from my presentation:

If you’re considering using RestKit for your next project, I recommend these tutorials to familiarize yourself with the concepts introduced in the presentation:
Developing RESTful iOS Apps with RestKit
iOS SDK: Advanced RestKit

As mentioned in the presentation, the object mapping API is being overhauled in the next version, so keep in mind that the syntax will change.