I just heard about this today from Awards Daily. It looks awesome, plus it's the Doctor and Gollum!
Einstein and Eddington is a British single drama produced by Company Pictures and the BBC, in association with HBO. It featured David Tennant as British scientist Sir Arthur Stanley Eddington, and Andy Serkis as Albert Einstein. This is the story of Einstein’s theory of general relativity, his relationship with Eddington and the introduction of this theory to the world, against the backdrop of the Great War.It premieres on HBO Signature on March 23rd.