Wow. Component Art has released one of the most impressive displays of AJAX enabled controls. I'm really getting anxious for Atlas to get out the door because I can't wait for the day that ASP.NET sites stop being the ugly red-headed step child of dynamic websites. Obviously that's an overstatement, but with this great release of Atlas I think we're all going to be blown away both by the third party control vendors as well as the home grown sites too.
Other AJAX Enabled control suites: