Currently there is a set of Community Blogs which include information about the "top performers" on the community page in a few categories, which I think is really cool.
We also have publicly available user stats and leaderboards which provide a "real-time" snapshot of this information.
I think it would be really cool to have some way to download this data. Currently using information that is available I can easily find out how many posts I make per day (.1) or how many stars I receive a day (.05) and compare that to other users, but in order to get that data currently I either have to click into a couple different pages and do some data entry, or try and scrape/parse the web content myself.
This seems like a fun, community-driven dataset, and I'm sure there are some cool things that the community could build with it.