Overall, Spiderman 2 is the best Spiderman film easily. If you are a fan of Spiderman then definitely see this film.

It has great action, great effects, great story, and it comes closest to the characters in the comics than any of the other films. You really do not even need to watch the first movie before this.

I would recommend you do, but it is not required to understand this. This film is pretty self-contained.