I had signed up to test one of the stages of Google Labs recently. The option I chose was where you type something in, and Google shows a list of popular searches that contain what you've typed so far. I thought it was neat, but lost interest and opted out.
Well now that feature is permanent! Check it out.
**Update: Now that I've tried it in FireFox, it looks like it only works in IE.If you enjoyed this post, I'd be delighted to have you as a subscriber to my RSS feed.