I knew we were in trouble when all the previews were horror films. But when "District 9" started, the tone was very different, like a documentary. For a while. The premise of the film was on the one hand intriguing: some 2 million plus aliens are stranded in Johannesburg, South Africa. After 20 years, the "camp" where they were rounded up has devolved into a slum. As a result of xenophobia and fear, the aliens, called "prawns" by the natives, are about to be forcibly relocated to a camp farther from town. On the other hand, let's just stop a minute to think about that. After traversing vast interstellar distances, the command module of the mothership just fell out , leaving the mothership moribund (but hanging effortlessly in the sky over Jotown) and it took 20 years to find and refuel it? As premises go, it's a little lame. But hey, I'm watching a movie about aliens, so suspending disbelief is certainly an option. It's hard not to cringe a...