from Mike Taulty 
In talking to UK customers about building business applications with Silverlight I often mention Prism or “Composite Application Guidance” that comes from the Patterns and Practices team and I’ve met a few people who either haven’t heard of Prism or have found it a bit hard to get into and so have put it to one side to look at “later”.
I thought I’d take a wander around Prism myself and as part of doing that I put together a bunch of screencasts that I’ve just published to Channel 9 which take a look at a few of the Prism topics like;
- Dependency Injection
- Unity
- Modularity
- Shells, Regions, Views
- Commands
- Event Aggregation
more here