This is not new, I actually covered it at Search Engine Land a year ago but never here and I think some of my more geekier readers will enjoy it if they have not seen it. Search Google for [hex], [binary], [octal] and [hexadecimal] and you may not be surprised to see an easter egg.
The results count shows the value of such queries.
As you can see, Google gets cute with the number of search results "about" figure.
Heck, since it is rarely right anyway, why not?
Forum discussion at Google+.