Architect Frank O. Gehry turns 83 today, and we can only imagine how he will be celebrating. (Last year's fete included a star-studded party, a 40-inch silver cake, and the opening of his 76-story tower called New York by Gehry.) Gehry has made us rethink museums, music halls and even chairs. His love of Picasso and of cubism is expressed in the shapes he creates, both of which can be seen in his simple Left Twist Cube, which, should he be looking for suggestions, would make a nice shape for his birthday cake. To Gehry, we wish you a very happy, slightly twisted, birthday!