If you wanted to see a Pranciny Pony scene that was something out of the Twilight Zone, see the play. They did this rather poor musical dance number which was a cross between "Master of the House" from LES MISERABLES and the cast of DELIVERANCE complete with a few men in coonskin caps no less.
I think Jackson was trying to show the hobbits were out of their element and the darker setting set the stage for the events of that night.
Bethberry - how else could you take the very idea of the Higgins song except to make fun of the singer for being so myopic? I see that as rather obvious. But maybe thats just me.