Bosnia and Herzegovina
Bosnia and Herzegovina is generally good for hitchhiking as the people here are very warm and friendly. If you are from a western country, chances are good that the people you meet in the street will have friends or relatives living in your country (due to refugees leaving Bosnia during the war). This makes for easy conversation with locals. The roads are mostly of high quality and police won't give you any trouble here. In some places you may have to wait a long time. When walking outside of cities, try to stay on the road or well used paths.
Thousands of unmarked land mines are still present in the country and walking off the road into the bushes for a toilet break may not be a good idea. Just use common sense.