This chapter explores parental mediation as situated practice. Earlier research has demonstrated that parents use different mediation strategies in order to help their children to understand media contents and diminish the negative effects media are believed to have on children. It has been suggested that actively talking with children about media contents is the most effective strategy in preventing unwanted effects. By utilizing conversation analysis, this chapter examines parent–child interaction in television viewing situations. Some 330 minutes of interaction between five-year-olds and their parents were analysed. Four practices of active parental mediation were identified: interpreting the programme, assessing the programme, teaching, and talking about the viewing experience. These practices serve several functions, which are discussed in the light of the moment-to-moment socialization process and parental mediation theory.