Kartoo is a really interesting search engine with a graphical interface. As Kartoo describes itself:
As soon as you launch a search, Kartoo analyzes your request, queries the most relevant engines, selects the best sites and places them on a map. In this map, the found sites are represented by more or less important size pages, depending on their relevance. When you move the pointer over these pages, the concerned keywords are illuminated and a brief description of the site appears on the left side of the screen.