what is jQuery?
jQuery is a lightweight open source JavaScript library (only 15kb in size).
Just recently Microsoft and Nokia announced they will support the JQuery library in their products! Initially they wil integrate it in Visual Studio and use within Microsoft's ASP.NET AJAX framework and ASP.NET MVC Framework.
I'm currently integrating jQuery in MOSS 2007 sites. A first examples is our client pages. I will soon post some tips.