I've long thought of 55 as being one of the most interesting buildings in NYC. I think the uniqueness that I see comes from how it doesn't feel like a skyscraper because of its huge bulk yet in any other city this building would be dominating the skyline like nobody's business. Even when reading the original post, my mind had a hard time accepting it being called a skyscraper.
btw totally forgot about the Beacon of Progress! Is there anymore pictures of it? I also like the Soviet-esque name that was given to it