Might be an odd one, but I watched The Man From UNCLE (2015) with the color settings on my TV set all the way down to black and white, and thought the movie was much better for it. I would love a proper b/w version.
It is funny you mentioned that, I was thinking about the next round and that is definitely a contender. I know for sure that I will be doing L.A. Confidential, so we will see.