Did you know that you can watch White Christmas in its entirety on YouTube!? And the picture quality is wonderful! What a world.
(If nothing else, just skip to 54:19. The 6 minutes to follow will make your heart stop.)
*Side note: I always felt really bad for Rosemary Clooney at the conclusion of that scene (1:00:16). She just looked so sad there with her dumb tambourine, all fake smiley after Vera Ellen KILLED IT with those legs. I've since gotten past this.