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You can exchange 12,500 sign-up AA miles for $75 Crutchfield Electronics gift certificate (10,033 points as of 10/11/06) and $10 Amazon.com gift certificate (2,378 miles).
Terms:
American Airlines AAdvantageŽ bonus mileage can only be earned by new CitiŽ Gold / AAdvantageŽ World MasterCardŽ card members approved through this offer. Your 12,500 AAdvantageŽ miles will appear as a bonus in your American Airlines AAdvantageŽ program account 8-10 weeks after your first purchase with the card. The AAdvantageŽ bonus mile offer expires on April 30, 2007.