Spider-Man 2 is undoubtedly the best in the Sam Rami trilogy, but if you expand outward to include any superhero film, including Nolan's Dark Knight series, new era DC and the entire MCU, there are only a handful of films in the superhero genre you would describe as 'perfect'. Only a few you would change nothing about and could not be improved at all, and Sam Ramis Spider-Man 2 was the very first.

Alfred Molina as Otto Octavius is the perfect villain, with a tragic path to villainy and a strong motivation as an evil individual and a powerful character arc throughout.

Tobey Maguire puts in his best performance as the webslinger and brings real emotion to the role, really being able to portray the pitfalls of leading a double life and the toll it takes on Peters family and personal life, an angle that the next two generations of Spider-Man movies haven't been able to do properly.

The plot is expertly balanced with the action and the slower more intimate moments and doesn't suffer from any pacing issues that have been a pitfall of many superhero movies.

Spider-Man 2 is with a doubt the first perfect superhero movie, and has become the formula for so many films that have followed in its footsteps.