Three years after the FDA yanked its "Wild Thing" ads off the air, Pfizer is again taking a playful approach with a Viagra TV spot riffing on the Elvis hit "Viva Las Vegas." And this time, they got the agency's OK in advance. The 30-second spot by McCann Erickson, which debuted on last night's NBC Nightly News, features a band of forty- and fifty something-looking men at a roadhouse bar playing "Viva Viagra." Although Elvis�s voice can�t be heard, the commercial spells E-l-v-i-s, from the way he sang the song, to the letter style of the written message at the end. Pfizer said the buoyant spot tested better than ads focusing more on the disease. "The goal of these ads is to take that upbeat tone and positive approach and motivate men to engage in dialogue with their physicians," said Pfizer spokesman Francisco Gebauer. Click the link below for the actual commercial.