Last nite was presenting at JAX-UX an intro to writing x-platform native apps using C# and .NET Xamarin's MonoTouch and Mono (www.Xamarin.com).
Since it was held at JAX-UX - my emphasis was on UX, rather than on code examples.
If the world will not end on 12/21/12 - hopefully will be able to present this at JAXDUG and then we'll dive more into the code and deploying apps.
We talked about creating native apps with device-specific experiences, and how to share non-UI code across iOS, Windows 8 and Android.
Event link
Click here for pdf with the SLIDES
Click here for the CODE examples from Xamarin.com