Silverlight is a programmable plug in that allows developers to insert animations, vector graphics, and audio/video into media rich web pages. Thought of as Microsoft's answer to Flash, and its replacement for FrontPage, Silverlight also allows programmers to code in any .Net programming languages, as well as languages such as Ruby and Python. If you are interested in creating flexible, interactive web applications or web sites, then you will want to read these tutorials, written by the best minds technology has to offer!