Firebug Plug-In for Firefox

I finally got around to installing Firebug (http://getfirebug.com/). After repeatedly hearing good things, the time had come to check it out. I wish I hadn't waited so long. So far I'm only scratching the surface of what it can do, and it's awesome!

If you're doing any web development work you'll definitely want take a look at the screencasts listed at the bottom of this page: http://getfirebug.com/docs.html. The Jesse Newland's Firebug 1.0 screencast page doesn't seem available, but the screencast file can be downloaded at http://files.jnewland.com/firebug.mov