Kudos to Cristian Mezei’s SEOpedia blog for a great list of secretive, hidden or long-forgotten pages behind Google’s domain. There’s more than 25 unique pages listed, but a few of my favorites include:
Google’s Search Data from September 11, 2001
It’s like an early peek into Google Trends.
And
Just look at the low quality Flash animation! I love it… Way to go Cristian, this is solid gold!