I was highly disappointed with Clash of the Titans. Forget the fact that they totally trashed the reason for whole quest in the first place, the whole thing was just poorly executed.
The scripting/dialogue felt rushed, almost like an afterthought, and seemed to only be there as meaningless filler between action scenes. I mean, I can talk really damn fast, and I spent most of the movie thinking:" Huh?"
The graphics were awesome. But what CGI movie today doesn't have great graphics? Unless you're talking low-budget indy films, I think they'll be okay. But you can't base a movie on CGI action sequences.
There was no character development for anyone. People came into the plot and left without really knowing who they were or why they were there, even the central characters.
I can keep going, but bottom line is save your money. There will be better movies out in a few weeks.