POWER OF ATTORNEY


Know all by these presents, that the undersigned
hereby constitutes and appoints each of Charles Y.
Tanabe, Maureen Sturgeon, Craig Troyer,and
Debra A. Anderssen, signing singly, the undersigned's
true and lawful attorney-in-fact to:

1. Execute for and on behalf of the undersigned a Form 4
in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder; and

2. Do and perform any and all acts for and on behalf of
the undersigned which may be necessary or desirable to
complete and execute any such Form 4, complete and execute
any amendment or amendments thereto, and timely file such
form with the United States Securities and Exchange
Commission and any stock exchange or similar authority.

The undersigned hereby grants to each such attorney-in-fact
full power and authority to do and perform any and every act
and thing whatsoever requisite, necessary, or proper to be
done in the exercise of any of the rights and powers herein
granted, as fully to all intents and purposes as the
undersigned might or could do if personally present,
with full power of substitution or revocation, hereby
ratifying and confirming all that such attorney-in-fact,
or such attorney-in-fact's substitute or substitutes,
shall lawfully do or cause to be done by virtue of this
power of attorney and the rights and powers herein granted.
The undersigned acknowledges that the foregoing
attorneys-in-fact, in serving in such capacity at
the request of the undersigned, are not assuming,
nor is Liberty Media Corporation ("Liberty") assuming,
any of the undersigned's responsibilities to comply
with Section 16 of the Securities Act of 1934, and the
undersigned agrees to indemnify and hold harmless each of
the attorneys-in-fact from any liability or expense based
on or arising from any action taken pursuant to this Power
of Attorney.

The attorneys-in fact have the right to request that the
undersigned provide as soon as  possible written confirmation
of the transaction and the signing and filing of a Form 4 on
behalf of the undersigned.

This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to File Form 4 with
respect to the undersigned's holdings of and transactions in
securities issued by Liberty, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing
attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 30th day of January, 2007.



/s/ Gregory B. Maffei
Signature

Gregory B. Maffei
Print Name