Microsoft Technologies

And when you think Sun's Java is cool, there is also Microsoft's range of products.

Windows Presentation Framework

And also this site: WPF MSDN site

Windows Communication Framework

A framework to manage Web Services. For those that was born in my era where we have to go through numerous procedures to create a Web Service, would definitely agree with me that the process to create Web Services these days are over-simplified (which is a good thing).

I also have the opportunity to explore the ASP .NET 2.0 Membership and Roles Management technologies for access control. Here is another link on Roles Management and a How-to guide on membership. This also leads me to Windows Authentication.   

Unlike Java, which is true object-oriented, Microsoft's C# is more towards procedural although it claims to be object-oriented.

One of the strategy I adopt for Microsoft' technologies is to understand the concepts (through their MSDN sites and basic tutorial) first. This is crucial. Microsoft's technology tends to bombard you with lots of similarly different technologies.