http://remi.org/2009/01/06/using-firebug-to-debug-unobtrusiv...
Now you don't have to guess what events were bound to which elements!
http://remi.org/2009/01/06/using-firebug-to-debug-unobtrusiv...
Now you don't have to guess what events were bound to which elements!
EDIT:
Also, this article has a good overview of multiple Firebug extensions: http://www.softwareishard.com/blog/firebug/list-of-firebug-e...
I know some people who love PixelPerfect for transferring Photoshop mockups to CSS.
Also one of the comments mentioned widerbug which I might try now that I have this weird 18.4" laptop: http://www.command-tab.com/2008/01/19/widerbug-widescreen-fi...
Great when working with sessions or cookies.
http://kid666.com/yui-event-list-bookmarklet/
I also wrote a rudimentary Firebug plugin but yours looks way more slick :)