On my banner ad, 460x no images, I got a strange "Show More" link on the bottom left of it.
Clicking took me to a page hosted by Google filled with related ads, in a list format.

The function was javascript:gurl()

Print Screen has stopped working, frustratingly.

It appeared on this page:
http://batman-dark-knight.moviechronicles.com/2007-08/this-weeks-shooting-details-harvey-dent/

I have the link to the "show more" page, but I'm not sure if posting it breaks any ToS.

Has any one else seen this function?

Google added it experimentally a couple of weeks ago.

http://www.google.com/search?hl=en&safe=off&client=firefox-a&rls=org.mozilla%3Aen-GB%3Aofficial&hs=RKf&q=%2Bgoogle+%22show+more%22+-inurl%3Adirectory.google.com&btnG=Search