The American Cancer Society and the Texas Dept. of Health is running a campaign at the moment to encourage people to picture themselves without cigarettes (yesquit.org). They’ve rolled out TV, radio and print ads and have also launched this clever billboard which features lungs that get a little bit healthier as the weeks pass by – just as they would if you quit smoking.

Anti-Smoking Billboard Campaign

I pity the guy who has to re-paint the ad every two weeks!