America's golden boy is actually part German. (His middle name is even Wilhelm!) The actor's parents are both of German descent, and Leo's mother was born in the country -- specifically in an air-raid shelter during a bombing raid in 1943. Leo frequently accompanied his mom on trips to her home country to visit his maternal grandmother in Oer-Erkenschwick, where she settled after living in America for 30 years -- and where Leo picked up some of the language. He still speaks a bit of German today.