The film was nicely executed, though I found the message to be too heavy-handed for my tastes. As this was clearly a "message film," I don't think it does a very good job persuading the people you're trying to persuade. Felt more like preachin' to the choir, of which I'm no part.
I found a lot of the situations pretty unbelievable, and some very cliche. I think films like "The Island" portrayed a thought-control society in a more logical believable way.