This excerpt taken from the BBBY DEF 14A filed Jun 1, 2009.
Stock Appreciation Rights. The 2004 Plan authorizes the Committee to grant SARs either in tandem with an option or independent of an option. A SAR is a right to receive a payment either in cash or common stock equal in value to the excess of the fair market value of one share of common stock on the date of exercise over the exercise price per share of the SAR. The Committee will determine the terms and conditions of SARs at the time of grant, but generally SARs will be subject to the same terms and conditions as options (as described above).