The history of WPF

Did you know that the Avalon project (the original name of WPF) was started back in 2001, even before .NET Framework 1.0 was released, from the team that originally developed Internet Explorer 4 DHTML support and the XMLHttpRequest API that enables AJAX?

I've learned that and some other interesting trivia from this Channel 9 video:

Michael Wallent: Advent and Evolution of WPF