I have a degree in broadcasting. I’ve worked as a DJ. I can leave a telemarketing voicemail that makes you question whether you want to erase it. Yet I know, even on my best day, I can’t hold a candle to the NFL Films guy who says, “frozen tundra,” or the movie trailer guy who says, “in a world…” Thus, I got quite a kick out of the cute little movie “In a World…” (2013). It’s a smartly written, neofeminist mockup of the voiceover business that’s witty enough to overcome a plethora of grating characters who, ironically, talk too much.