How to share the most code between a WPF and an ASP.NET MVC application?

Question

What architecture and patterns can I use to share the most model and logic code between a WPF and an ASP.NET MVC application?

I am trying to achieve a bit more here than

Answer 1

I actually found Rocky Lhotka's books, software, and videos on this topic very helpful. Here's a few links to his content:

http://www.lhotka.net/

http://channel9.msdn.com/Events/Speakers/Rockford-Lhotka

http://www.amazon.com/Expert-C-2008-Business-Objects/dp/1430210192/ref=sr_1_2?s=books&ie=UTF8&qid=1331834548&sr=1-2