 William Holden (I) (qv) refused to do the dance sequence unless he  was given an $8,000 "stuntman premium" and was allowed to do the  scene while under the influence of alcohol. He didnt believe the  studio would do either, but they wound up allowing both. In that  scene he is actually intoxicated, and it still remains one of only  two movies that he ever danced in (the other being  _Sabrina (1954)_ (qv)), and one of the most memorable scenes in the  movie.