I think that the commercial you're looking for is part of the "You got a lot to live and Pepsi got a lot to give" campaign. It was started in 1969. Pepsi shot an updated version with Brittany Spears about a year and half ago but only gave it limited use. If you go to altavista.com and search for " old pepsi commercials" appoximately four listing down the page you will find a listing for something like "Pepsi and Coke Cola Wars". Open this page and scroll down to the chronology for Pepsi. Follow this section to 1969. The audio portion of the commercial that you're looking for should be there. Good luck.