http://www.wolframalpha.com/ is one of the finest creation. This search engine takes the queries and tries to find lucid and crisp results. It is very easy to find answers to your question if the data is already available to Woframalpha. There is a lot much improvement can be done to Wolframalpha, but, even for now it has a lot of sophisticated algorithms working behind the scenes. The video is related to wolframalpha and I liked this video.
I’m a very big fan of TED talks. These talks are very informative and provoke new ideas. There are thousands of these some of them are really interesting. Here is the one I liked.