The fact that "secular" folk don't seem to mind the pro-life message and Christian folk don't seem to mind the vulgarity is amazing. There's some new paradigm here! Crudity is here to stay (for a while at least, until it suddenly becomes rude to be polite). I also think the fact that the screenwriter was a one-time stripper gave her impeccable street creds for secular folk. In an experiential culture, that's what it takes.
Backstory: the screenwriter had a teenage friend who got pregnant that inspired the movie.
By the way, fellow-Canadian to actress Ellen Page, director Jason Rietman is BRILLIANT.
Don't miss a quiet little scene where Juno goes upstairs in the home of the soon-to-be-adoptive parents of her baby. She tries on some face cream and perfume. It shows that she's still a mischievous kid, and is more interested in frilly girly stuff than she might be willing to admit.
Although at the beginning of the movie Juno focuses on "body parts," and gives us a rare cinematic glimpse of "women's needs/wants/desires," it's clear by the end that her focus is on the whole person: mind, will, heart, and, yes, body.