Joe Hewitt (Firebug creator) gave a power-user demo of Firebug at the Yahoo! campus to share and explore the Firebug 1.0 release.

The video shows you the subtle features within:

• Highlighting the DOM that you know your Ajax call will eventually update, and see Firebug showing you what is updated
• The profiler at work: the difference between time spent only in that function, versus including recursive calls into other functions
• Tying into the profiler from your code
• Tips and tricks for the inspector, profiler, network, and more

It is always interesting to see the creator of a tool show you how they use it.

Joe Hewitt, Firebug, Online Video