Movies are fiction. :) Still, you would hear "affirmative word order" to mean a question in two common cases. 1) A very colloquial style. Even people who do this are very aware of the standard grammar. 2) For confirmation, just like a negative question. The implication is, "this is what I think; please confirm".

Do you mean questions that are phrased like statements? For example, "You're coming here?" instead of "Are you coming here?". You can really consider it to be both a statement and a question. It's used to indicate both surprise and uncertainty, and most of the time the question is rhetorical. If you see someone you know going to the airport with a suitcase, you might say "You're going away?". This is rhetorical as you can clearly see that the person is going away, but at the same time you want confirmation and/or an explanation.

I'm assuming you mean something like, "You want to go to the movies this weekend?" In English, the important identification for questions is tone: one that rises at the end of the sentence. Sometimes we're just being lazy and dropping the word "Do" like I did in my first example: "Do you want to go to the movies?" "You want to go to the movies?" However, we also use affirmative word order when we're surprised by information. For example, I don't like going to clubs, so when I agreed to go out a few weeks ago, my girlfriend said, "You want to go to a club?" because she was surprised.