Where to start? It just seemed like it tried to do too much -- and none of it well. Depending on how you count them, there were three or four one-dimensional bad guys. There were numerous subplots -- none of which I really cared about. I'm really not a movie snob. I understand Spider-Man is a comic book movie and much of the story is be going to unrealistic or unbelievable. However, this movie just had too many unbelievable coincidences.
As I understand it, Stan Lee's Spider-Man is suppose to be about how a young, ordinary man deals with extrordinary power. S-M3 was promoted as being about Peter Parker's dark side. Unfortunately, Parker only taps into his dark side after an asteroid of black goo just happens to crash lands next to him. Apparently, it would be too realistic or ordinary for Peter Parker to just become a jerk without extraterrestial influence.
Maybe it's just me, but it seemed to me that Tobey Maguire played Peter Parker as mildly retarded in this film. While Parker is supposed to be young and innocent, it's hard to reconcile how oblivious he is toward Mary Jane and how inept he is at landing a real job or even manage to get a cell phone (he has to use his apartment building's pay phone?).
I was surprised to discover that the movie was only two hours and twenty minutes long. It felt much longer. Worse, it had at least two false endings. In fact, people were leaving the theater before the actual end. I audibly groaned during the completely unneeded third ending scene.
Barely DVD-worthy, maybe worth seeing an edited verson on basic cable. Possibly Grade C (average - not great, not terrible) if not for its length.