I'm of split opinion myself about that question. I certainly don't want to see the site overrun by such questions. This one in particular is fine I think, since it very specifically asks about language related media, even if the answers slightly verge on the my favorite movie is ______ type.
If a lot more of these types of questions keep popping up, we'll have to be more aggressive about regulating them and probably redraw the line somewhere. A single such question here and there which is clearly language related is acceptable, I think.
I actually found some good movies I want to (re)watch in the answers, so the question has a positive net effect so far. :-)