WWW: All Aboard the Casting Couch

If you were given license to turn your favorite HP fanfic into a movie, which would it be? You're also the casting director -- do you have a dream cast filled with blockbuter movie icons, or have you made up original looking people in your head, "unknowns"? Do Dan, Emma, Rupert, and Tom fit the bill to a T? Is there another story you'd like to cast? Do your perceptions of the characters differ from fic to fic?

( Post: All my lovely peeps )