Coen brothers with its head turned around as it looks back over its hindquarters. Up to 2003, Joel received sole credit for directing and Ethan for producing, due to guild rules that disallowed multiple director credits to prevent dilution of the position's significance. The only exception to this rule is if the co-directors are an "established duo". Now that they were able to share the director credit the Coen brothers have become only the third duo to be nominated for the Academy Award for Best Director. The first two pairs to achieve this were Robert Wise and Jerome Robbins (who won for
Joel S. Birnbaum president in 1991. Birnbaum was elected to the National Academy of Engineering in 1989. He won the IEEE Ernst Weber Engineering Leadership Recognition Award in 2000 "for leadership in integrating, extending and shaping industrial research and development in measurement, computing and communications". In 2001 he became a Fellow of the Association for Computing Machinery. He is also a Fellow of the American Academy of Arts and Sciences, the Royal Academy of Engineering, and the Institute of Electrical and Electronics Engineers. Joel S. Birnbaum Joel S. Birnbaum is a technology executive who served as senior vice president of Hewlett-Packard. Birnbaum earned