The more I think about it, the more I like it. Particularly the last third. Not really sure what else to say other than that I really want to see it again. Oh, it’s funny too!
Possssssibly the best film of the series? The action sequences are wonderfully staged (the opera scene is a standout, but remarkably it comes less than half an hour into the movie and yet it doesn't feel like the thing peaks too soon), the dynamics between Ethan and his team are all so fun and well-defined, and the plot moves at an incredible pace. It also has its own equivalent of the Spongebob "x hours later" joke with Baldwin saying that Ethan Hunt is living his last day as a free man hard cutting to "Six Months Later".