Windows Presentation Foundation (WPF), one of the components of .NET Framework 3.0, is the newest presentation technology for the creation of next-generation Windows applications. XAML-based and graphics-oriented, WPF enables developers and designers to create rich and effective user experiences that incorporate UI, media, and documents. Need examples? Applications that are built using WPF include Microsoft Expression Blend, the New York Times Reader, and Yahoo Messenger for Vista. WPF is part of Windows Vista and runs on Windows XP SP2 and Windows Server 2003.
Samples PM, Windows SDK Team