It looks great Pan. This is not a biggie, but I'm not too keen about the red font for the captions. Also, when you hove over the captions they disappear. So I'd choose different colour for that. Maybe black and when you hover green or something more neutral than red.
Doesn't it violate the rules that APIs of such movie databases have? Like that you use the data collected and stored on their servers for your own profit? Just asking, I'm curious in case I wanted to create wnything similar in the future.
About the website: what is the name of the theme? I think there is one theme very similar to the one you are using that is significantly more lightweight and faster than other themes usually are. I'm not sure whether it is the one that you are using, because it looks pretty similar