I remember renting Moon 44 on video many many years ago, I enjoyed it at the time even though the special effects for the most part were pretty bad and so was the acting.
I watched the movie again on DVD last night, the cast with the exception of Malcolm McDowell were pretty bad ( why does he keep making these cheap-ass films ? ) and the production designer seemed to be copying what he saw in Alien / Aliens and Blade Runner but that really helped the movie in terms of atmosphere.
You can see Roland Emmerich's visual style beginning to emerge in this movie, unfortunately he still had a lot to learn as a writer.
Moon 44 is a fun little B-grade sci-fi movie, it's nothing special but it's also not as bad as a lot of people suggest either.