ASP.NET 2.0 here, along with a few helpful add ons to help me with jQuery:
- Wilco Bauwer's "ID Override" (http://www.wilcob.com/Wilco/Toolbox/ WilcoWeb.aspx) which keeps MasterPages and UserControls from messing with the control IDs and - Jason Newton's Json.NET library (http://james.newtonking.com/ projects/json-net.aspx) Both (and Visual Studio's 2008 Intellisense support for jQuery) make programming life a breeze in my day to day work