Exhibit 1
POWER OF ATTORNEY
FOR CERTAIN FILINGS
UNDER THE SECURITIES EXCHANGE ACT OF 1934
I, David E. Shaw, hereby make, constitute, and appoint each of:
Anne Dinning,
Rochelle Elias,
Julius Gaudio,
John Liftin,
Louis Salkind,
Stuart Steckler,
Maximilian Stone, and
Eric Wepsic,
acting individually, as my agent and attorney-in-fact, with full power of substitution, for the
purpose of, from time to time, executing in my name and/or my capacity as President of D. E. Shaw &
Co., Inc. (acting for itself or as the general partner of D. E. Shaw & Co., L. P. and general
partner, managing member, or manager of other entities, any of which in turn may be acting for
itself or other entities) all documents, certificates, instruments, statements, other filings, and
amendments to the foregoing (collectively, documents) determined by such person to be necessary
or appropriate to comply with ownership or control-person reporting requirements imposed by any
United States or non-United States governmental or regulatory authority, including without
limitation Forms 3, 4, 5, and 13F and Schedules 13D and 13G required to be filed with the
Securities and Exchange Commission; and delivering, furnishing, or filing any such documents to or
with the appropriate governmental or regulatory authority. Any such determination shall be
conclusively evidenced by such persons execution, delivery, furnishing, and/or filing of the
applicable document.
This power of attorney shall be valid from the date hereof and replaces the power granted on
February 24, 2004, which is hereby cancelled.
IN WITNESS HEREOF, I have executed this instrument as of the date set forth below.
Date: October 24, 2007
DAVID E. SHAW, as President of
D. E. Shaw & Co., Inc.
/s/ David E. Shaw
New York, New York