Coca-Cola scored during last night’s Super Bowl with its “Sleepwalker” ad. It was in the Top 5 of the most popular ads according to the USA Today Ad Meter focus groups.That may not put the ad in the same elite category as classics like Coke’s ad with Pittsburgh Steeler “Mean” Joe Greene. But a good showing on advertising’s biggest night has to be considered a success.In “Sleepwalker,” a sleeping