Constructors
Demo: the power of silverlight video – tim sneath.
Silverlight page flip sample on vimeo.
Cider
Ozeki c# sip stack web to web video calls using silverlight.
Silverlight samples scott hanselman.

Radbarcode in a sample application telerik ui for wpf videos.

Jocoseness's
Silverlight learning guide: samples and case studies.

Silverlight video sample

Inking on video with silverlight.
Silverlight 2 digg sample part iii | keydet | channel 9.

Azure media player.

Turn's
Your first step to the silverlight voice/video chatting client.
Silverlight 5 and nspeex: capture audio from capture source.

Demo: iis smooth streaming | features | microsoft silverlight.

Leafage's
Slartoolkit silverlight augmented reality 3d projection sample.