Just discovered that my good friend Troels has a Blog too called C# Edge. He is doing some amazing AJAX stuff with his OutPost module. Today I just saw that he got listed in Daniel Ziess' great AJAX comparison chart.
I, frankly, have to learn that stuff very soon. I am doing a game for a comapny called Netposten right now, pure ASP.NET, and it could surely use some snazzy AJAX features.