Wouldn't it be nice to be able to debug AJAX from the comfort of the IDE? Gonzo stuff like setting a breakpoint inside of some script that'll get hit client-side?

We're getting there, and could use feedback.  Noah has a great post on this with screenshots - check it out:

http://blogs.msdn.com/noahc/archive/2007/03/01/script-debugging-improvements-in-orcas.aspx