Even if you're not a fan of F1, this movie is a great biopic from Ron Howard (even if some details may have been exaggerated a bit) with brilliant performances from Chris Hemsworth and particularly Daniel Bruhl as Lauda, retelling his fierce rivalry with James Hunt.
He had to overcome a lot in his career, as seen in the film, and he did it with sheer determination.
Above all of that it is also just a very enjoyable movie.
RIP Niki.
Edit: Sorry if you didn't know about his passing and heard it from this post. Here is a good article about him from the BBC today and also their obituary feature