Spotted on google.com: people searches return rich contact data in autosuggest box:

Predictably, it only works for people with Google+ data.

Turns out that selecting that option and pressing return doesn’t navigate to aaronpareki.com, or even a Google+ page, but adds a weird state indicator and a “this option does not exist” warning:

(just in case anyone’s wondering, the reason I was searching was to attempt to reproduce this)