Anyone else think that Green Goblin in Spider-Man was too cartoony? I mean, I thought his motivations were inconsistent and vague, he's too hammed up, and he's not threatening enough. And let's not forget the poor costume.
His motivations change without any explanation. At first he wants to kill the board members, and he succeeds, then he gets into a fight with Spider-Man. Now he becomes obsessed with him for no known reason. He invites Spider-Man to join him...in doing what exactly? Then when Spider-Man refuses, he wants to kill Spider-Man, presumably for refusing his offer and therefore making himself his enemy. So, after finding out Spider-Man is Peter Parker, he kidnaps Mary Jane Watson and takes a cable car full of kids hostage to give him a sadistic choice, and then ends up fighting Spider-Man in an abandoned building. But wait, why does he want to emotionally torture Peter Parker instead of just killing him efficiently, like he did to the board members and vice a versa? It feels arbitrary because Spider-Man is the title character.
He generally lacks menace throughout the film, although I think it improves at the ending when he is threatening Peter's family and friends. The problem is he acts too over-the-top to be genuinely threatening, and his dialogue is poor and cliched.