This title may not mean much to you, unless your country made the list.  However, most people appreciate the pleasure of meeting friendly people during their travels instead of rude ones.  The following report makes for an interesting read:  (this is an older article, and I’m sure the list changes a bit each year)

http://travel.yahoo.com/ideas/world-s-friendliest-countries.html

This indicates that the friendliest countries are:
1. New Zealand
2. Australia
3. South Africa
4. Canada
5. United States