Check out this video on WebMatrix http://mediadl.microsoft.com/mediadl/www/s/silverlight/video/web/getstarted/2/Overview.mp4 . I love the fact we support Joomla, and Umbraco and drupal for content management along with a host of other CMS providers. WebMatrix has a great interface for developing web sites.
Customers complaining that starting your IIS application is slow the first time? Having odd responses during app recycles from your application? The IIS team has come up with a module to pre-load your worker process as part of IIS. Read about and download the Application Warm Up Module here