One of the more experimental products was called Google Squared. It takes information from the web and displays it in a spreadsheet in "split seconds".
Marrissa Mayer interview at Searchology '09: Google Squared
Marissa Mayer talks about the new search functions announced today (May 12 2009) at Google Searchology: Search Options, Google Squared and Rich Snippets; and Sky Map. While Ms Mayer described this product as "transformative", she would only hint at the specific techniques that Google uses to drive this feature.