Now that the ASP.NET MVC Framework has been released here is a good article that explains the features, pros and cons of using this MVC Framework versus the regular ASP.NET Forms that we have been using since 1.0.
You can catch the article at the below mentioned link.
http://blogs.msdn.com/usisvde/archive/2008/10/06/net-3-5-sp1-best-practices-when-to-use-the-asp-net-mvc-framework.aspx
Read the complete post at http://mrajesh.spaces.live.com/Blog/cns!803D08B41461A51B!320.entry