When I browsed around the web, I found a cool site named DeviantART who published painting and sketch from amateur and professional artists. One of the most amazing is the Polish artist, Krzysztof Lukasiewicz, who drew portraits using lead pencil. Among his works are the sketch of famous celebrities such as Angelina Jolie, Salma Hayek, Mel Gibson, and Rihanna, which are very resemble to a photographs.
If you're interesting to see more about these portraits, visit Krzysztof Lukasiewicz page on DeviantART.
Fun or Not: