I am really amazed by the current poster campaign for smoking manners, for a number of reasons:

Firstly, it is a campaign to ask smokers to respect the health and comfort of others and the campaign is being done by Japan Tobacco, the world's third largest manufacturer of tobacco products. Secondly, government regulations are very liberal towards smoking (just compare the size and content of the health warning on cigarette packs here and elsewhere), so I think JT are not required to do such a campaign. Thirdly, the idea of a campaign that calmly and politely asks smokers to reflect upon their habits is totally different from the drastic and sometimes very graphic quit-smoking campaigns launched by governments and health organisations all over the world. And then there is the cool minimalist design of these ads. It is monochromatic (a friendly green) and has these bizarre parodies of functional drawings found in technical instruction manuals or educational material.

But finally, and most importantly, the posters are bilingual and the English is plain wonderful. In contrast to your average use of Engrish in Japanese advertisement, it is grammatically perfect, uses whole and sometimes long sentences rather than just catch phrases, and strikes an interesting tone in its indirect and thoughtful way of conveying the message without using direct imperatives or even judgemental language. Here is a selection I could find online, but there are a lot more: