The good:
* Background is real events - gives viewers an idea of history
* Very clean (worst language is "Oh my Lord of the Flies" and violence is really there in only two scenes)
* Very simple plot - good for young children (we watched this with a 3-year old and he understood it)
* Lovely and imaginative renderings of the flies' parallel world in the junkyard
* Buzz Aldrin makes an appearance at the end. (This was my favorite part of the movie.)
The bad:
* Sloppy production with obvious bloopers ("Authorized Personal Only" in big letters in the middle of the screen, Amelia Earhart lands in France, not Ireland)
* Very simple plot - boring for adults
* Very simple characters - calling them 2 dimensional is giving them too much credit. Every character (except maybe the astronauts) is a caricature.
* Scooter, one of the main characters, has a problem with compulsive eating. This problem comes up a lot and gets a lot of screen time. They try to play it for laughs and to make it one of the central conflicts in the movie. But the jokes are not funny and Scooter isn't struggling with the problem - it is just other people telling him he needs to eat less and focus on other things. So it is neither a good for laughs nor as a conflict.
I personally didn't enjoy the movie very much. Then, why, you ask, did I give it 4 stars? My son liked it and he is the intended audience. Additionally, there was no magic. A kid's movie with no magic and no "I think I can, I think I can" gets an automatic upgrade with me - realism requires extra work and imagination on the part of the writer. Finally the movie gives a view of an incredibly important historic event (when our species first set foot on another world) and treats it as important. I hope my son wants to grow up to be an astronaut and views the much coveted position of "rock star" as meaningless trash unworthy of his talents. This movie goes more in that direction than many others I've seen.