This exploratory study examined the acceptability and efficacy of a videotape modeling smoking cessation as an adjunct to smoking cessation advice delivered during prenatal care. In a randomized controlled trial involving 60 women, we compared the delivery of brief smoking cessation advice and a tipsheet to the same advice and tipsheet plus provision of the videotape. Outcomes included opinions about content and acceptability of the videotape, and smoking behavior change during pregnancy. The most highly endorsed features of the videotape were seeing other women quitting smoking (77%), dealing with stress and bad feelings (69%), talking about what to do with urges to smoke (69%), and discussing ways to get support from families and friends (54%). The reported quit rate in the last month of pregnancy, validated by exhaled carbon monoxide levels, and including women lost to follow-up as smokers, was 19.2% in the intervention group and 0% in the comparison group (p = .02). This study suggests that the use of videotapes modeling smoking behavior change may increase the effectiveness of the assistance in quitting smoking that is generally available in obstetric and family practices or public maternity clinics.