Perhaps the all-time best descriptive marketing line is 'natural'.
Especially given that it was only around a couple years ago now that "Big Corn" was able to lobby (re: pay) the USDA enough, or congress, or whomever, to allow foodstuffs sweetened with High Fructose Cornsyrup to be labeled as "natural sweetener"
And, from the single course I had in marketing during my MBA I'll say this for the effectiveness of mass market commercials: often times it isn't so much about attracting you as a customer, right now. In some of the examples brought up the aim is a bit different. Take car commercials, sure they may want you in the dealership right now financing a new $90k pick up truck. But the reality is, they know the average american only buys every three years. So, the car commercials are about a constant presence and constant influence on your future purchase. . . If you're a Ford guy now, Ram and Chevy want to influence you to their product, next time you're around. Same thing with beer commercials: its about trying to influence you away from one brand toward another. Course, beer they don't often cite another brand (like, no mentions of "taste tests show blah blah blah" stuff) the way automotive does. Of course, what has a much bigger influence on big ticket items, such as automotive purchases, appliances and the like, is really the customer service at the local level. So, I work in a car dealership's parts department, and I can't tell you how many customers I've won over simply by treating customers better than another parts/service department. If people feel mistreated or ripped off in their car purchase, they are going to go elsewhere.
I would also say, based on that MBA course, no one is as immune as they think. Sorry, we just aren't. . . Sure, we can all post here about absurd ads, logical fallacies, volume levels, etc. etc. but from a marketers standpoint: they already won. . . They got you thinking about the ad/product outside of the space of the advertisement. Which is, ultimately the point of advertising. . . See, one of the best strategies for ads is, like the Superbowl in the US, on monday after the game, you go in to your place of employment, and "omg, did you see that commercial? sooooo funny man!!!". The ad was successful in getting head space beyond the 30 seconds it took to watch it. Even if you don't purchase, your talking about it to someone else in your sphere can cause them to purchase, and someone else talking about an ad/product can cause you to purchase it. Now, I cannot argue the effectiveness of advertising all that well, as I only had one course on the subject during my uni time, but I had a few cross classes with folks doing an MSM (master of science in marketing), and I know they could run circles around all of us on whats going on behind the scenes in marketing. Of course, they would be linking things together in the totality of marketing rather than the singular act of advertising (things like shelf placement, email coupons, sales timing and amounts, etc)