Today I saw this blog post over at Nikhil K's blog about a "jquery-like" framework for Silverlight to help developers build professional UI. Actually this "jquery-like" framework is an extension for the Silverlight.FX, which is created by Nikhil K. The "jQuery-like" framework is build by Daniel Crenna.
Here is some code from the sample that comes with the release.
// Slide Script
The code above "slides" this grid, defined in XAML.
<Image Source="/MS.net.png" />
<Image Source="/Silverlight.png" />
If you want to know more about this, visit the blog listed below. You can also find download links for the release at the blogposts.
Nikhil K's blogpost - Fluent Animations in Silverlight
Daniel Crenna - Composing animations with Silverlight.FX
Enjoy and happy coding :)