[jQuery] Debug Tools - Charles, DebugBar, Firebug Lite

[cfdvlpr]

What debug tools do you all use?  So far, I've just used firebug.
That really only seems to work well for me in Firefox and it works
very well - makes my life 100 times easier.  How about tools for IE?
Is there anything you'd reccomend?  As much as I hate coding for IE,
it's what 80% of our visitors use.  Hopefully, someday everyone on
this planet will use Firefox, but until that day I need to code for IE.