By reading the MSDN blog this weekend, I've discovered a really interesting post on the Terminal Services Team Blog that has opened me a window on the future... 
I've read in the past about the new "Windows Desktop Sharing API" provided by Microsoft Terminal Services, a new set of API based on RDP to enable customers to write custom collaboration solutions in Windows Vista.
With this new set of API you will be able to write customized collaboration application with desktop sharing feature and this post explains how to do this.
Why this post has opened my mind?
Because embedding desktop sharing features inside your custom applications opens a new way of managing remote assistance for example, and it adds new interesting collabouration features on all our future applications. I'm thinking about all my .NET applications that customers are using... if I could start a remote assistance directly via my application (for example by pressing a button on the toolbar) it will be solve lots of problems that actually I have.
Windows Desktop Sharing API are so cool and must be analized as well as possible... 