Will new search engine Blekko turn out to be a Google-killer, or another Cuil? Only time will tell, but Ashton Kutcher is so impressed he's invested $200k! (Mind you, that's probably pocket money to a movie star like him.) In the meantime, check out this video, which shows you how to use Blekko.
Blekko is definitely worth a try. It's hard to break the Google habit though (and the lack of an image search is a problem.)