Have you seen Sunshine? Check that out if not.

ps3 lets u go through all the dvds in netflix

I could have done without seeing the alien in his helmet.

I'm sure there's plenty more to it. I doubt they gave away the whole movie. Honestly, this trailer just gets me more intrigued. It's kind of like Paranormal Activity. I know at least for the second one, the trailer gave you a pretty good glimpse at the movie, but still there was enough left to make the movie plenty interesting despite already knowing what you saw in the trailer. The whole art of tension building helps with that.

The problem with JJ Abrams style trailers is you run the risk of also not showing enough that you don't get people's attention like you could.

Using this trailer as an example. If they showed less, would it really grab anyone's attention? Granted I too could have done without the alien in the helmet part. But something tells me that's not even close to being what they need to be afraid of. After all, the poster shows a footprint that is as big as the astronaut's footprint. But, if they didn't show that alien stuff and the conflict parts of the trailer, it would make it just seem like some boring moon landing documentary looking thing.

I doubt that was the "alien" It was just a tease of something. They put it in there really fast so normal people would be like "did you see that, rewind it!" like they caught something.

Personally I could of done without them showing the disease more than anything. I highly doubt this is everything, they barely moved away from the landing area and only showed one or two clean shots.