One of the funniest bits of satire (out of many good ones) in the movie "Demolition Man" is the fact that in their semi-utopian future, the most popular radio station is one that plays nothing but old advertising jingles. ("Hot dogs... Armor hot dogs... What kinds of kids eat Armor Hot dogs...")
Taco Bell was the only restraunt to survive the franchise wars...In the future, all restraunts are Taco Bell.