Patrick Tisseghem was going to speak about SharePoint site definitions and templates on the TechEd 2005 in Amsterdam, but his session agenda has changed. He will be speaking about another very interesting session:

Creating Dynamic Web Sites with ASP.NET 2.0 Web Parts
"Drill down on the new Web Parts infrastructure in ASP.NET 2.0. Learn how you can use Web Parts to build rich Web sites-enabling end users to dynamically control the layout of pages-and customize the properties of server controls."

We already had a session internally about this subject given by Mart. I will certainly be there as SharePoint Geek! :)

http://blog.u2u.info/DottextWeb/patrick/archive/2005/06/09/4311.aspx