Cutaway view of one of my starship designs from a while back. This ship has varying directional gravity. In other words, 'up' changes depending on where you are in the ship. Perfect for maximizing storage space, and confusing the pirates who are boarding your vessel.
That makes a lot of sense to have variable gravity. If they can create artificial gravity why would it be in one direction only? Of course it would vary depending on where you are in the ship. They should use this concept in a movie to add more realism. It's little things like this that make the viewer feel like they can believe what they are watching is real.