Absolutely spell binding. I may be biased as a long time fan of F1 but this has to one of the best, at least in the Top 5 documentaries that has ever been put on screen. Ayrton Senna is a legendary figure, not just in Brazil, but around the world. I think this is the first time anyone has managed to capture the essence of what Senna was, what he meant to the sport and to the rest of the world. I can't help but be moved.