Showing that "tweezer-shaped" isn't necessarily the best descriptor for a proposed 2,000-foot tower in downtown Chicago, there's a new architectural "conversation piece" on the block. This broadcast tower is the brain-child of architect Cesar Pelli, and would match the proposed Calatrava-designed skyscraper in height if built as planned, and would cost a cool $300 million. It's not technically a "building" though, as it wouldn't hold office or living space, but would be used by television stations broadcasting high definition signals and would not be breaking any "World's Tallest" records.