A spoiler sent in the following bit about Doc Ock's tentacles in the Spider-Man 2 movie: In the July issue of Wizard magazine there will be a very small article about Spider-Man 2 where the following is stated.
"On the Doc Ock front, Alfred Molina's costume will more or less consist of a dirty lab coat, with his tentacles coming out of the harness on his back rather than at his sides. While the tentacles will reportedly have the comic version three pronged claws, they'll also have another set of tiny claws in the middle that handle more delicate tasks."