We've all be able to use the DOM Inspector in Firefox. Now the IE Team releases the Developer Tooolbar for Internet Explorer. Quickly view the DOM tree, highlight tables, cells and divs, enable/disable page elements, and even be able to measure (via an on-screen ruler) the distance between two arbitrary points. Playing catchup with Firefox? Sure. But it's nice to have a toolset like this for when you're working with IE as well as when you're working with Firefox.

Check out the blog post on the IE team's blog for more information, and where you can report bugs. IE Developer Toolbar works with IE6 (and IE7 beta) on Windows XP and Windows Server 2003.