What? I'm not even trolling, it was a ridiculous movie. The only good parts were the action bits, and even they got old fast. Venom was shoehorned into the plot with as much grace as a backhoe in a grocery store aisle, and Sandman is given maybe, what, three character-specific scenes to make us "feel" for him--there is precious little development of his character at all.
Spiderman and Mary Jane, meanwhile, just go off on their own to prove that Mary Jane is an emotionally needy bitch and Peter Parker, despite saving the world countless times, is a complete and utter pussy when it comes to women. The Symbiote thing was cool, I'll admit, and the first half of the film really worked pretty well--its too long for its own good.
Oh, and James Franco just fails in this movie, which is a shame 'cause I think he's a good actor. He's got this odd wooden quality to him, in between bouts of just sheer RAGE all the time, and his motivations for villainy are totally wack--especially that scene at the end (SPOILERS):
Where his Butler shows up to tell him that Spiderman didn't really kill his father
(END SPOILERS)
That scene just oozes poor plot direction. THREE villains, in one movie? Not only that, but three MAJOR villains, primary, nemesis-esque villains. These aren't like, bit player villains, these are some of Spidey's biggest foes, and they just aren't given any justice whatsoever. So, in summary:
God, Spiderman 3 sucked.