Annoyed with having to cut/paste my XAML samples?  Here they all are as downloads:

spline.xaml - Use of KeySplines to create bouncing ball effect. See this post for explanation.

animationcomposition.xaml - Use of animationcomposition to create bouncing ball effect.  See this post for explanation.

rotation.xaml - Creating animated rotations of 3D meshes. See this post for explanation.