I saw a sign on the Tokyo subway that said (in English) "When I pass gas, I look behind me. But I don't bother when I'm smoking a cigarette." It was part of an anti-smoking campaign and had a great graphic of an unfortunate man getting hit by a blast of gas and a plume of cigarette smoke.
I brought back a flyer from Tokyo advertising an all-Japanese production of "Fiddler on the Roof" as well.