I've heard a lot of talk about ZabaSearch. It searches publicly able government records as well as some commercial sources. A lot of people say that it violates their privacy because it's so easy to find people, so I guess it works pretty good.
Well, apparently, google is great but it filters out tons and tons of searches to give us the best results but what if we really want to learn something new? May be this will be the answer. http://blog.wolfram.com/2009/03/05/wolframalpha-is-coming/