One of the things I enjoy least on the interwebtubes is discussions of movie casting. So often the conversation isn’t based on which actor could actually portray the character from history or the novel in question, instead it’s based on hairstyle or sometimes even hair colour. As evidence, take a look back at the various threads you may have seen about Ben Affleck as Batman and notice how few people mentioned anyone who’s hair colour wasn’t black.
Having said all that, I’d just like to say that if someone were to propose a Kickstarter about a biopic of Nikola Tesla starring Pablo “Pornstache Mendez” Schreiber from “Orange is the New Black”, I would totally kick in. Check it out – the pic of Tesla looks like Pablo dressed up for a promo.