At first I was like WTH and then I realized it was April 1st :). I don't quite remember what google did last year but I vaugly remember something to do with space or something called google paper. It was interesting then as well.
Looks like I am getting better at not making a fool of myself these days ;). He he.
Guyz at google are indeed innovative. Check it out here - http://mail.google.com/mail/help/autopilot/index.html. You can also see a "New! Gmail Autopilot" in the top of you gmail screen.