my turn hehe....not really fair as I spent the last 3 years doing oceanographic research in the the southern oceans, plus a couple a years worth of seminars in europe & asia
Africa: South Africa (from there), Namibia, Madagascar, Mozambique, Zimbabwe (born there)
Indian Ocean: Mauritius, Comoros Islands
Oceania: Indonesia, Australia, New Zealand, Solomon Islands, Papua New Guinea, Vanuatu, Fiji, Tonga, Kiribati, Tuvalu, Samoa, Marshall Islands
S. America : Chile, Argentina, Ecuador (Galapagos Islands), Brazil
N. America : USA, Mexico, Cuba,
Europe : United Kingdom, France, Germany, Spain, Portugal, Denmark, Sweden, Netherlands, Belgium, Greece, Cyprus, Malta, Russia
Asia : Singapore, Taiwan, China, Japan, India
Other fun places that are strictly parts of the above -
Tristan da Cunha - a speck in the south atlantic, remotest inhabited place on earth 2,000km from the closest civilisation (being St Helena, another British dependency in the south Atlantic)
Rapa Nui - Easter Island, another mighty remote place
Kerguelen Islands - French archipelago in the southern Indian Ocean - gnarly place, raw nature right there.
finally, not a country as such, but Antarctica - South Shetland Islands to be exact.