Spoiler alert, for the 3 people out there that don't know the myth of Perseus or the original CotT.
My wife and I went out to see the new Clash of the Titans tonight. We both enjoyed it, but the whole time I was watching the movie, right from the very beginning, I was sorta annoyed at the way they had to Hollywood-ize EVERYTHING about this movie. (Yes, they made the ending with a potential for a sequel...fucking Hollywood.)
Now, having studied script-writing (and being in the middle of writing one myself at the moment) I know the conventions. Character drives plot. And writers reverse engineer motivation from the events in order to make a satisfying (cathartic) experience for the movie-goer.
But for me, the Perseus myth has always primarily been about his confrontation with Medusa, not with his confrontation with the sea monster (I think the original is called "cetus" or something like that--the original borrowed the name Kraken from Scandinavian sailor legends.) That was more of a tack-on. In this movie, defeating the Kraken--and thereby Hades--is the main motivation of Perseus.
Something about that just didn't jibe with me. I didn't really like the glittery 70's type Flash Gordon special effects for the Olympians' armor either. But that's just a nit-pick.
Anyway, the action scenes were fun, the monsters looked cool (saw it in 2D, 3D might be even cooler...), and while the story was even more removed from the original myth than the 1981 original movie, it does work. My wife thought it was great, because she's never read the original myth nor seen the original CotT yet.
What I liked--Perseus struggling to reject his 'hero nature.'
What I didn't like--Perseus's main goal being to defeat the kraken.
See it if--oh, come on, you're gonna see this eventually if you're a D&D geek. If you're big into mythology, though, you may wanna see it on the cheap.