As many have already noted, Sherlock’s fantastic “The Hounds of Baskerville” episode featured a cameo by the Doctor’s iconic Tardis, seen below just above a cluster of caves.
Well, compare that image to this screenshot from today’s Doctor Who episode “Robot of Sherwood.” Look familiar?
Now, am I saying that this connection was intentional? Man, I’m not saying anything. But it is interesting, isn’t it?