Most people by now have probably seen The Hobbit and The Lord of the Rings film adaptations, but the holy grail of Tolkien film adaptation would of course be The Silmarillion.
Christopher Tolkien has a pretty clear opinion on that, which can be pretty much summed up as “No way in Mordor!”.
However… that’s not stopping a group of Tolkien scholars and fans led by Prof. Corey Olsen to plan out a multi-season series based on the entire book.
Check out the SilmFilm episodes in the Tolkien Professor’s podcast feed - they are a lot of fun.