In Martin Scorsese's The Aviator, in the night club, when a tablemate takes a piece of food of Hughes plate and he reacts by leaving a few minutes later. Errol Flynn is drunk throughout this scene and after Hughes leaves the night club Flynn is involved in a fight.
But the band plays on and the music conductor “dances” something where his body arches and he throws out his arms while falling from one foot to the other, like some kind of march. I've seen it before in old movies.
What is this dance called and is there any background info or story behind it. There's a video can be seen below; The fight starts at 3:01 into the clip: