Still in beta testing but does inquisitor have potential to take on Google and win? Whilst Google is great at delivering speedy results, - you type in a couple words, press Return and you get pages of results - Inquistor suggests search results as you type. Very useful.
You can also select from blog, social bookmark, ecommerce and regular search engines eg Amazon, Digg, Flickr, Google, Technorati and Yahoo! - assuming it moves beyond Beta this list will certainly grow.