There's no link to the original viz here, can you post that? The video is great, I like the format and the suggestions.
The only suggestion I have is that since the viz appears to have a quick filter for date is to make the min/max dates in larger text, such as in the dashboard title area, so the title would actually be a calculated field that is something like "Apple vs. Microsoft Stock Performance for 1/1/06 to 6/1/12".
Yeah, I was trying to do that for the title, but didn't realize I could use a calculated field. Thanks for the suggestion!
Here's the link to the viz if you want to interact with it more:
And the blog entry which has more details and highlights: