Keyboardr is a masterstroke of design by Julius Eckert. It starts with the simple interface of a digital clock. With each keystroke in the field-entry box, Keyboardr will automatically search in the engines of your choice (google, google images, youtube, twitter, wikipedia, etc.). This is way more impressive than other meta-search engines for a few reasons. First, it is faster and the UI is much more accessible. Second, you can use it with your keyboard, which makes your searching much faster. This even extends to finding the settings page, which can be done by merely hitting the space bar while the field-entry box is blank.
Very well done.
Hat tip to Mediapathic