Spoilers, and a crude sexual reference below:
I liked this movie more than I thought I would. I'll make an early Oscar prediction and say that if this movie doesn't win Best Makeup, then I'll have lost all faith with everything. My world will turn upside down. Stick a fork in me, I'm done. That said, I thought the visuals were terrific, and Burton did his best with the rather boring emotions in his script. The city where the apes were was very cool, and the lighting in some scenes was optically orgasmic

. The pictures are pretty in this movie, no doubt about it.
I would have liked to have seen a sex scene between Helena Bonham Carter and Marky Mark, or at least an implied one. Imagine where you could go with that! Now that would have been wonderful. But since I go with what I'm given, I'll say that I thought their acting was good, Carter especially. Lack of sexuality doesn't make it a bad picture, after all. Just a less interesting one, when you've got such potential.
The human love interest was in it because she probably blew the casting director

. OK, I'm joking, sorry. She's a pretty girl, but she could have been cut completely and the movie would have been just peachy. I liked Tim Roth very much, because I like him in everything he's in. Most of the characters weren't given much to work with, apart from Ari and Marky. Like that kid, what the hell was his deal? And the girl's father? But being the reasonable human being I consider myself to be, I don't expect such little things like character development to be so prevalent in big summer blockbusters. Even ones by excellent directors.
I did notice the whole political double entendres that were going on, and it was entertaining. There were some hidden political meanings and statements buried in the movie; I sensed them right from the start, and it was fun watching the actors chew it up. Heston was particularly funny with his whole firearms deal-NRA parallel thing. I liked that aspect of the movie, for sure.
Now about that ending:
You all are looking for logic in a movie that is completely devoid of it from the start. For Chrissakes, it turns the tables on evolution. Not that that could never happen, but I don't see it coming anytime soon

. No one goes to see a movie about a planet of apes (even if it is Earth) and wants to see LOGIC. I thought the ending was wonderful, because it came out of nowhere. No one said to me "look out for a sick ending!", so I was somewhat surprised. Asking how the apes came back in time or whatever is akin to asking how characters can outrun huge fireballs in movies like Hollow Man. You're not supposed to ask, I don't think. It's really just meant to have the audience say "what?" I saw it as a whole parallel universe thing, that was very cool .
All in all, I think the movie wussed out. It was content to be an action flick, with buried messages, as opposed to outright statements about human-ape sex (for example). But regardless, I liked this movie, and enjoyed it for the action piece that it was. If the ending wasn't there, I'm sure I would have liked it much less, that's for damn sure. The movie played it safe, but it was enjoyable. I'm not ashamed to say that I paid to see it.