UK (incl Jersey & Guernsey)
Norway
Denmark (incl Greenland)
Italy
Switzerland
Netherlands (incl Netherlands Antilles)
India
Thailand
Philippines
China (incl Hong Kong)
USA
Canada
Peru
Bolivia
Australia
New Zealand
But I agree with others that I tend to favour ground transportation. If you were to ask me about where I've taken domestic inter-city rail journeys, It would be up in the 30s!