Microsoft’s Dan Crevier has interesting series about layout to layout animations on his blog (it is not new, but still usefull):
- Part 1
- Part 2
- Part 3
- 2006.12.27 Attaching behavior to an Avalon element in XAML is not really part of the series, but related to it anyway
In addition, there is quite a cool sample on netfx3.com called WPF Feature Montage posted by Rob Relyea [MSFT] – it is definitely worth checking.