White Christmas. I know it's a holiday classic, but I have encountered many of late that have not seen this wonderful movie. My favorite scene is actually not Christmas-y at all - the number "The Best Things Happen While You're Dancing" - and features fun lyrics and the incredibly dancing of Vera Ellen and Danny Kaye! I have included the video below for your viewing pleasure. Check out Vera's pink, twirly dress - I adore it!
Image found here.