For the past 9 years I have been spending 6-9 months working in Antarctica and then traveling the world in between seasons.
As of 8/10 I have visited 24 countries with fairly extensive travels in South America. In 10/09 I visited Australia, my 7th continent.
As of 07/16 I have visited 100 countries. My two favorite were Iran and India. This year I will be traveling for 5 months visiting approximately 12 countries.