My screenwriting class was assigned to read a draft of Juno for Thursday, and I finally got around to it last night, because I'm not a terribly big fan (unlike everybody else on fucking planet), but I don't remember if this ended up in the movie or not, but in the script Juno is looking through the penny saver and talking about how she doesn't want somebody wholesome adopting her kid, and Leah responds:
What did you have in mind, a family of disturbed loners who are into gunplay and incest?
I nearly died. The Winchesters adopting Juno's kid. It describes them so perfectly. *rolls on the floor*