Well, the artist himself hates the term "The Bean" - which is what everyone in Chicago calls it. It looks like a pinto bean standing on both ends. The artist has the astoundingly pretentious name "The Cloud Gate" for it.

It's Chicago. We'll call it what we like. Comiskey Park will always be Comiskey Park, and The Sears Tower will always be The Sears Tower. We don't care much for companies who buy things and then try to get us to call them those things.