The French student we had came over with a group of 22 kids. All but two of them were smokers, which threw some host families for a loop. I was okay with it as long as he smoked outside, but it turns out I got one of the non-smokers. His first night here, he presented me with a gift from his parents, which was a bottle of French wine. My husband sent them back a bottle of Jack Daniels!
(Apparently very hard, or very expensive, to get over there -- they loved it.)
Our friends who are currently hosting the boy from Sweden have had a great year with him. The first trip they took him on was to an Auburn football game. He will go home this summer with a big collection of Auburn clothes, and he has really mastered the "War Eagle" yell.