just to make brain in wellness mode during the summer vacation ;)

http://stockcharts.com/school/doku.php?id=chart_school:technical_indicators

Ribbon control is fantastic in my opinion :-)

Here

http://windowsclient.net/wpf/wpf35/wpf-35sp1-ribbon-walkthrough.aspx

and here

http://elegantcode.com/2009/04/07/the-free-office-wpf-ribbon/

you can find a valid tutorial in order to make a cool UI.

Using the skin you can make cool UI for any cool user

http://www.codeproject.com/KB/WPF/SkinningInWPF.aspx

Those links are very usefull:

• http://dotneteers.net/blogs/vbandi/archive/2010/05/25/20-silverlight-4-demos-in-one-zip-file.aspx 20 quick demos already
• http://justinangel.net/  nice article about interop
• http://blogs.msdn.com/b/adonet/archive/2010/07/19/absolue-beginners-guide-to-entity-framework.aspx

I like this statistical computing project available here http://www.r-project.org/ and  here http://www.koders.com/info.aspx?c=ProjectInfo&pid=9U8CYE8AS5WL71F84FC6F9CDEA .

BTW this guys and their blog are very cool

http://crsouza.blogspot.com/

http://dynamicnotions.blogspot.com/

http://www.trentfguidry.net/

In my opinion, if I need to develope  custom application in Silverlight my choice its use the RIA Services way.

This link is a right introduction:

http://www.code-magazine.com/Article.aspx?quickid=0907131

and those are direct from ms

http://msdn.microsoft.com/en-us/magazine/ee336308.aspx

http://www.silverlight.net/learn/videos/all/net-ria-services-intro/

Those italian links do the same right introduction:

http://www.winfxitalia.com/articoli/communication-foundation/introduzione-NET-RIA-Services.aspx

http://blogs.msdn.com/b/pietrobr/archive/2009/04/17/silverlight-3-e-i-net-ria-services-parte-1.aspx

Those links are also usefully

http://www.nikhilk.net/RIAServices-BookClub-TOC.aspx

http://blogs.msdn.com/b/brada/archive/2009/10/27/index-for-business-apps-example-for-silverlight-3-rtm-and-net-ria-services-july-update.aspx