Superman
It took 3 watches to push it from 4.5 - 5. I know it's not perfect the rating doesnt reflect a level of perfection but to me this is better than anything within the mcu. It made me smile, laugh, cry, its hopefull, exuberant and unopologetically itself. The best Mcu movies that come close or just about equal to is the Guardians Trilogy and that's also directed by James Gunn... he seriously gets this type of stuff. It's different, it's bold, it's hopefull, it's punkrock, it's my Superman.