This post is just a bunch of links on XAML/Sparkle put together in one place for my convenience:

North Face Demo at the PDC

Manuel Clement and others – Introducing Sparkle

PDC Dev Team — Plasma Screen Application at PDC

Introduction to XAML

ZAM 3D

Mobiform Aurora

Healthcare demo of Windows Presentation Foundation (AKA Avalon)

Infragistics DataPresenter Control for Windows Presentation Foundation