Wow! Impressive. You are so lucky to have travelled so much. I have seen a bit of Asia, most of the US, a bit of Canada (Banff and Jasper was amazing), Caribbean but nowhere in Europe, ME, Africa, Australia.
In fact, as my college going away party, I am hoping to possibly get a European River cruise in with my family and some friends. We got some Viking brochures and I have been drooling over the pictures.