The problem with being a dead musical artist is there's really nothing to stop your estate from selling your works to the highest commercial bidder. Exhibit A: Jimi Hendrix. Now, I give you Exhibit B:
Did the folks at Pfizer - or, more accurately, at Pfizer's ad agency - think about how homoerotic this ad is? Let's see - you've got a bunch of guys in a roadhouse, singing to each other, praising Viagra, and then shaking hands and driving off. I know what you're supposed to think - they're all going home to their wives/girlfriends/prostitutes - but it sort of plays like this sausage fest is actually an illicit circle jerk. "My buddies and I love getting together to re-enact our old fraternity days, but now that we're middle-aged, it's becoming more difficult to get it up... good thing Viagra came along to let us do our totally not gay thing!"
Also, did you notice what this commercial is missing? It's kind of odd to see a pharmaceutical ad that makes absolutely no mention of its product's side effects, or an ED ad that doesn't say something like "Ask your doctor if your heart is healthy enough for sex." As pointed out here, it's almost as if this spot is aimed more at recreational users of Viagra, which seems like a hideously inappropriate thing to do, especially for a prescription medication - it's basically like running ads for methamphetamines. But then nobody ever accused drug companies of being particularly ethical.