I know it's been around for a while now, but I couldn't mention Tatlin's tower without referencing the amazing animation Tower Bawher by Theodore Ushev. In a hyperkinetic homage to Soviet Constructivism, a tower is built, set to the strident score of "Time, Forward', by Georgy Sviridov.
While there are clips of the animation available on YouTube, the best quality version can be found on the Canadian National Film Board Animation Day site.
There's also a great interview with Ushev here.