I loved the cutting from scene to scene in the dream. At first, it just looks like normal telly, but it's done sufficiently fast paced there's something a little odd about it. And then, Donna notices it happening!
Similarly, the death of Other Dave was great. He'd been sent to get the Doctor not to spend too much time, so "Doctor, we've got to go" was entirely in character. And then you might say that again and again. It is only later in the scene you realise he's been got, and has probably been for some time.
Both these things are television genius, and couldn't really be done like that in written fiction.