Looks about the best it ever has with the model shots appearing very clear. It's weird watching this now and remembering it was made for TV as the model and effects work was of a very high standard for the time even in films. Looks a bit creaky in indoor scenes and some of the photo backdrops are very obvious in 1080p. But to be honest you probably know that and if you're here to knock it for being made in the late 70's you probably shouldn't get this. It's very of its time, but with some great ideas and concepts, and not so great haircuts and space discos.
Really hoping they will release the whole series now in HD as this is the movie edit of the pilot which is about half an hour shorter than the TV version. However that will be in 4:3 and this is 16:9, loosing part of the top and bottom of the full frame pilot, but what we see should be of higher resolution than a full frame release if they've scanned it right - looks damn clear in most places to me.
The Sensurround soundtrack is really bassy especially if you have a sub hooked up - but that's how it was shown in cinemas.
Think of this a nice companion piece to the series if it is ever given an HD release.
It's region free and plays fine on a UK PS3 and BD player.