Cumberland Farms this week broke a new television spot touting iced coffee this week starring former "Knight Rider" (NBC) and "Baywatch" (NBC and syndication) star David Hasselhoff, the company said on Wednesday.The new 30-second TV commercial, which was created by Boston-based ad shop Full Contact, features an extremely toned couple walking along the beach. They run into David Hasselhoff, who's standing next to a sand-sculpture grand piano. Hasselhoff guzzles a Cumberland Farms iced coffee, declares it, “Hofftastic,†and asks the woman, “Wanna bang out a tune?â€View the commercial here.