i know this is directed at females but i shall answer anyway =P
im a 16 yr old guy, and i do feel that they influence me but more of a role model. I see them and believe i can do it too. I also act because i want to be fit to be healthy and maintain self respect.
Definitely. i have an "alternative" family structure that somehow manages to include at least one example of each of the major "types" of people. Despite all efforts to make sure my daughter understood that all we wanted her to be was herself she still managed to get it in her head that she had to pick a type to be like. Skinny or fat. Emo or preppy