I could look at how 2 drinks are varied in promotion by the same company (Glaceau vitaminwater vs Coca Cola)...




http://www.bing.com/images/search?q=glaceau+vitamin+adverts&FORM=HDRSC2#view=detail&id=CD9648A33DFF47E70D9C358DC31A98012EC10C61&selectedIndex=0

http://www.bing.com/images/search?q=coca+cola+adverts&qs=n&form=QBIRMH&pq=coca+cola+adverts&sc=8-17&sp=-1&sk=#view=detail&id=71D0B30D8CA5FA84D797965B172F6E11635CDAE2&selectedIndex=179