Fan Art: SherDoc - Sherlock and Doctor Who Mashup Poster
I did a bit of research surfing, and was surprised that no-one had. So here it is: Benedict Cumberbatch as The Doctor and Andrew Scott as The Master. I think you'd agree, whether you're a Doctor Who or a Sherlock fan - it would be a pretty awesome fit if it ever came to be.
But for now, this is purely fan art just for fun. Mine, mostly.