Sky Captain and the World of Tomorrow
The one interesting theme that came up dealt with a feeling of hopelessness for the salvation of mankind. Man had become so corrupt and completely lost that the doctor (or whatever creation of his perpetuated his dream) thought he knew best and would gather the species he thought necessary to begin life on another planet. This seems to be a common theme in the Sci-Fi genre (Hellboy II, the Matrix, Transformers 2, and others).
Great visual effects, not the greatest acting, so you might enjoy it if you have a really nice visual setup. We ended up with a lot of questions concerning the plot, not a whole lot was explained. Perhaps if a little more of the history of Sky Captain had been explained we could have enjoyed it more. It was for sure a fun movie, if you've nothing better to do or there's not much else on the library DVD shelves.