Here is an interesting list I pulled from Google trends
http://www.google.com/trends?q=porn
I will even give the noobs a little clue with appropriate niches to market to these countries...
1. New Zealand (hairy)
2. South Africa (black, yes I know south africa is mixed)
3. Australia (hairy,rough)
4. United Kingdom (bad teeth blowjobs and dogging aka swapping)
5. Ireland (redhead)
6. Canada (warm weather pics and movies)
7. United States (everything)
8. India (obvious)
9. Finland (blondes)
10. Turkey (trannies)