The long green line: Documentary filmmaker Errol Morris directed a spot to promote MasterCard's debit card, continuing McCann-Erickson Worldwide's "Priceless" campaign. In the spot, breaking Feb. 21 during the Grammy Awards telecast, a concession stand customer orders hot dogs, sodas, pretzels and popcorn, only to find out the price is "$5 more than you expected." Faced with a long line at the ATM, the buyer whips out his MasterCard. "Exact change: priceless." Art director: Chris Cerena. Copywriter: Eric Goldman.