I don't think anyone can review this movie better than what Roger Ebert said about it back in 2004: "It's a real movie, full-blooded and smart, with qualities even for those who have no idea who Stan Lee is. It's a superhero movie for people who don't go to superhero movies, and for those who do, it's the one they've been yearning for."
I also don't think any film has so eloquently defined a hero the way Aunt May does in a wonderfully heartfelt and poignant scene half way through the film.
I do think the villain of Doctor Octopus is underdeveloped in both logic and motivation (although Alfred Molina is great), Mary Jane Watson is too dependent on the men in her life, and the friendship arc between Peter and Harry is a bit contrived, but none of these flaws affect what is otherwise a beautifully constructed film and a worthy sequel to the original.