I love me some JSON. The problem with it is that it's not too human readable when you need to see what it's returning. Sure you could litter your code with alerts or console.debug (if you are using Firebug and Firefox to figure out what values are you getting back.

But if you've got the Firefox/Firebug setup (and why don't you if you don't?) then you can just use the Firebug console to display the JSON data. Say for instance you have the following data returned from your service (but imagine it's a bazillion lines long):

               "SubObject": {"SubAttrib1":"bar"}

Just wrap that in an eval function, plug it into the console and you get back a nice little tree of your data in the DOM view.

console screencap

Now isn't that sexy?