You can change the view from first person to third person at any time and you can fight in real time or use VATS for more of a turn based kind of thing, I think. And of course theres going to be humor, a guy wants you to blow up a town with an atomic bomb because its in the way of his view.
On another note, you can go
here to watch a few vids about some fallout features. They are interactive at then end of the clip so dont forget to click around.