Really cool stuff, but I think it should be really called "jQuery-related enhancements for Firebug" as opposed to "Firebug enhancement for jQuery".

This guy also wrote FireRainbow, a JavaScript syntax highlighter for Firebug:

http://firerainbow.binaryage.com/

Be careful with this. After using this plugin for most of the day, I found it broke Firebug's mouse selection tool. Disabling the plugin fixed it.

Cool idea.. but Firebug's code is not stable to begin with and adding hacks like this will only increase the frustration.

especially like the ability to inject jquery for quick debugging and playing around

There's a bookmarklet for that (jQuerify) which I use all the time: http://www.learningjquery.com/2009/04/better-stronger-safer-...