Re: Spider-Man 2
Right, the real heart of believability is human behavior. Do the characters behave in such a way that feels true?
And that's why I'm ok with Spider Man 2. Toby and Kirsten aren't my first choices for the characters, by any stretch. As written, there aren't great explanations for his choices, but at the end of the day, they perform well enough to where I believe his longing for her and her complete exasperation/infatuation with him. The details don't always add up, and as such this film will never be in heavy rotation for me, but I liked in the theaters, and I liked it in a subsequent viewing.
Same with Inception. There was probably easier ways for Leo to see his kids, but I totally bought his desperation to see them. So when the opportunity came for an elaborate plot to see them again, I was along for the ride. It's not a perfect movie for it, but I had fun.