I figured there would be some kind of surprise with Oswin, but given what we'd seen earlier in the episode (and with Amy), I was expecting another converted human. Loved the reveal we got, though, and second
twitchmoss thought about the Dalek's trying to get in being extra creepy. I especially loved at the end where the Daleks had forgotten him. Fucking brilliant.
Line of the whole episode? "SUCKERS!"
Hell, I bet the Doctor had it planned all along where the teleport was going. So Rory and Amy were never in any danger if they teleported. They probably know enough Tardis flying to get it home or at least relatively close; or the Tardis could have flown them.
Now it'll be interesting to see if the "Doctor WHO?" thing will be at the end of nearly every episode. From what I've heard, every episode this season will be self-contained and treated like a big-budget movie. But that "Doctor WHO?!" thing is still there, so that will likely be an ongoing theme.