Ever wonder who owns the airplanes that you see at the airport? Do you have a friend that is a pilot? Wanna know what ratings he/she holds?
Try landings.com, scroll to the bottom and click on Databases. From here, you have lots of options. To look up an airplane you must have the "N number", so don't forget to write it down. Anyway, click on "Basic Search" and type in the N-number. Lots of good info.
For info on a pilot, click on "Pilots" (under the certifications section). This selection is above the "Basic Search" link in the middle of the page. Type in your friends info (or partial info) and click Send Query. More good info.
Let me know if you find anything really interesting.