Search Suggest can be pretty powerful; it's certainly shaped the long-tail somewhat as people now have a high propensity to veer towards those multi-keyword suggestions Google puts to them.
What if the entire search results page updated as you forged your query in the search box? Google seems to be testing it. This video has been out for a number of days so I'm sure many of you have seen it already; however, for those of you who like to catch up over the weekend - here it is:
Update: Just noticed the video was actually made by Rob Ousbey. Nice catch.