New version of Tangerine
One of the reasons I love working at Infragistics is that we not only have awesome controls, but we also create cool real-world applications that put those controls to use. Part of our mission here is to provide exemplary guidance on how to create modern user interfaces that provide great user experiences. Those applications are referred to as 'exemplars.'
When I joined Infragistics (for the second time) we already had a WPF exemplar, Tangerine. Now that NetAdvantage for WPF v7.2 has been released, and Visual Studio 2008 as well, we decided to upgrade Tangerine accordingly. If would like to try out a free WPF-based e-commerce experience, read the source code, and review the documentation, please feel free to check it out!
http://community.infragistics.com/exemplars/tangerine.aspx