Not being into modern movies, I purchased this because it was going cheap in a Store that had many titles at ridiculously low reduced prices - this would be some years ago now, and so I guess when or 'if' the film had been big, that most who wanted to had bought it already. (a good time incidentally, for those of us who don't rush out to buy new releases to purchase DVDs) Anyway, although not into many modern Pictures, I do enjoy a little 'Sci Fi' now and then, and so I gave this a go. Apart from the name 'Charlie Sheen' being familiar to me, I didn't recognise anybody else who was in it, and so that was another thing in its 'disfavour'. However; I was very impressed with this movie!
Okay; so the story-line may not be so original, but I thought the Special Effects were pretty amazing, and I did enjoy the fact that as many suspect; if these things were really going on, then I guess the general public would be the last to know about it, and so from that point of view - the plot is pretty 'realistic'.
I've just watched this again after some years with my Partner who hadn't ever seen it - and it still holds up - despite being almost fourteen years old now - and he was pretty impressed too!
Particularly good watched on a Wide TV Screen with plenty of great sound!