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In the 30 Rock episode "Leap Day," Tracy Jordan reveals he did a TV ad for them and was paid with a $50,000 "Benibucks" gift card that he wound up spending in its entirety feeding both his friends and the homeless on February 29, 2012.
However, the tabular Islamic calendar used by Islamic astronomers during the Middle Ages and still used by some Muslims does have a regular leap day added to the last month of the lunar year in 11 years of a 30-year cycle.