Ramani over at Hackosphere has taken an idea Blogger Beta: Random Quote Generator and turned it into a slick little widget. His post, Random message widget (no Edit HTML!) shows you how. He created a nice form called Random Message Widget Creator that is basically plug and play.
You can find out more about this new/hidden(?) feature of Blogger Beta from phydeaux3 on OMG! Puppies!, which by the way, has nothing to do with puppies.
Check it out...use your imagination to see what else you can do with this feature!