I know this is probably old news but I wanted to post it in celebration of the release of Firefox 2.0! The stupid IE logo cracks me up everytime. Weeeeeeee.
http://video.google.com/videoplay?docid=-3291785230023779795

Update: I removed two of the videos because the Weee one owns them all. You can download a higher resolution version here. I found this on the firefox flicks website.