I had the following video in my queue recently,
Why is it overflowing? by Google Chrome Developers: Una Kravets & Adam Argyle (YouTube)
The following is not a comment on the usefulness of the information in these videos, but on the presentation, which I found so distracting as to make me stop watching. If the poster for it has changed, then here’s what it used to look like.

I dunno, it’s just too many colors and too much extra content and … too much stuff before I get to find out the answer to the question posed in the title.
The backgrounds of Una and Adam’s offices look... [More]