This Old Code

http://weblogs.asp.net/lduveau/archive/2009/07/22/silverlight-3-object-tag-param-list-aka-where-is-my-asp-silverlight-control.aspx

MS dev (Microsoft trainingM for solution providers)

XAML Fest Online

ObservableCollection Base Class With Expression Blend Designer Support
ObservableCollection Base Class With Expression Blend Designer Support – An Example Project
Silverlight DataGrid – A Simple Pager Control

wpf silverlight framework.

http://caliburn.codeplex.com/

http://www.codeplex.com/wpfonyx

Modal Popup Dialog Box

http://silverlight.net/forums/t/28514.aspx

http://www.silverlight.net/Quickstarts/BuildUi/6ac5741f-ef92-4b8b-9919-ac7fa2c5ba09.aspx

http://www.silverlight.net/Quickstarts/BuildUi/ControlEventHandlers.aspx

http://www.silverlight.net/quickstarts/Dom/DomAccess.aspx

Javascript communication to Silverlight 2.0

http://weblogs.asp.net/albertpascual/archive/2008/08/13/javascript-communication-to-silverlight-2-0.aspx

http://www.wilcob.com/Wilco/Articles.aspx

Silverlight and JavaScript Interop Basics

http://pietschsoft.com/post/2008/06/Silverlight-and-JavaScript-Interop-Basics.aspx

Mike Taulty: 44 Amazing Silverlight 2.0 Screencasts
http://channel9.msdn.com/posts/Dan/Mike-Taulty-44-Silverlight-20-Screencasts/

http://quickstarts.asp.net/3-5-extensions/reference/silverlightref/default.aspx
http://msdn.microsoft.com/en-us/library/bb404716(VS.95).aspx
http://quickstarts.asp.net/3-5-extensions/silverlight/SilverlightCtrl-XAMLUsingManagedCode.aspx
http://msdn.microsoft.com/en-us/library/cc221359(VS.95).aspx
http://msdn.microsoft.com/en-us/library/cc221414(VS.95).aspx
http://www.silverlight.net/quickstarts/managed.aspx

SilverLight Controls
http://community.netikatech.com/demos/
http://www.visifire.com/silverlight_pie_charts_gallery.php
http://labs.componentone.com/Sapphire/
http://www.codeplex.com/richtextedit
http://www.vectorlight.net/
http://www.codeplex.com/VWGSilverlight
http://www.codeplex.com/SilverlightP2P
BlackLight
http://www.codeplex.com/blacklight/

Silverlight toolkit demo

http://silverlight.net/samples/sl2/toolkitcontrolsamples/run/default.html

silverlight toolkit

http://www.codeplex.com/Silverlight

Patient Journey Demonstrator

http://www.mscui.net/PatientJourneyDemonstrator/

Microsoft® Health Common User Interface Control Toolkit

http://www.codeplex.com/mscui/Release/ProjectReleases.aspx?ReleaseId=18699

Silverlight Contrib

http://www.slextensions.net

Silverlight 2.0 Syntax Highlighting TextBox (Code Project Article)

Silverlight FloatableWindow ( Tim Heuer) codeplex http://floatablewindow.codeplex.com/

plain old control providers

Componentone.com

telerik.com

infragistics.com

devexpress.com

http://www.silverlightshow.net/Default.aspx