There's a certain fake ad for Sprite that is making the rounds on the web this week. I'm sure you've heard about it, so I'm not going to link to it here (it's remarkably NSFW, so do a search for it). But I came across this real ad at Adfreak for Perrier. It was made in 1976, and while it's still pretty risque' it's really well done (had to find a video on YouTube that looks like it's from another TV show, that's why there's laughing).