Ask HN: Great Use of Wolfram's Computable Document Format?

Hello,

I was perusing through the Wolfram website & discovered that Wolfram have created a document format. It is interactive and seems quite impressive. Potentially amazing (less maybe the proprietary state).

However, I wasn't able to find any great examples of the format being used or really taken advantage and was wondering if anyone here had an example i might be able to take a look at?