| abstract | - File:Shaquille O'Neal Vs. Hakeem Olajuwon for Taco Bell The Double Decker Taco was introduced as a limited-run promotional item in 1995 and was advertised in a series of commercials featuring NBA basketball stars Shaquille O'Neal and Hakeem Olajuwan, before becoming a permanent menu item. The Double Decker Taco joined the regular menu items in June 2006.
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