The latest issue of Quicktime News from Apple contains an article about nanotechnology. It points to a QuickTime movie about nanotechnology on the web site of AthenaWeb. The movie is very interesting, but already 4 years old! It explains what possibilities the nanotechnology might bring us. Furthermore it seems like Europe is ahead in this particular race Check it out!
How about letting your international customers provide help to the victims of Katrina via a link in their local iTMS?
You could also allow them to “purchase” via the US store (currently not possible, I tried). Instead of sending them back to their own store again, do redirect them to the American Red Cross page.