Ever wonder who yodels anymore? Well, Brad Pitt and Jimmy Fallon, for starters! The talk-show host and his guest, who's busy promoting World War Z, star in this pretty adorable clip in which they have a full-on yodel conversation from different NYC rooftops. They really go for it, and things get especially impressive with their "double yodel." Watch now to appreciate the fine voices and yodeling skills of Fallon and Pitt!