>I can't stand it! lol. I have invested massive amounts of time learning C#.NET, and already it's becoming yesterday's news. Now Silverlight and WPF are the flavors of the day.
>

WPF/Silverlight both rely heavily on C#. C# (VB.Net) is the foundation from which these technologies spring. The UI (XAML) is just the presentation stuff, all the rest of the plumbing requires c#.