I have been playing with jQuery more and more. I like MooTools but with jQuery there is even more pre-developed plugins and code that can be leveraged. Here is set of a few good examples. I am going to have a play with both the CrossSlide and setting equal heights on some projects I am working on right now. Just thought I would document these so they would be easy to track down later:

http://devsnippets.com/jquery-posts/20-jquery-plugins-for-unforgettable-user-experience.html