I should begin by stating that I LOVE this film, which may explain, if not justify the following comments.
This is an excellent exploration of the human mind in a fantastic situation, but more simply just a damn good science fiction thriller.
I would agree that the first half is the better part, but to those who criticise the second half as being cliched and unstructured I would argue that a new impetus is needed by the time Zac has lived out his various fantasies and flirted with insanity.
Where many appear to feel the film is confused and leaves many matters unresolved, that very ambiguity and bewilderment was what I enjoyed most. For most of the film you DON'T know where the characters have found themselves, whether they are actually alive or dead, or what reality they're living in.
In accordance with this fascination I found the ending superb, accompanied as it was by that haunting theme music. Maybe it came as a result of the writer not knowing how to end the thing but it was never going to be a film where everything fell into place by a few cunningly worded lines at the conclusion! Therefore I liked the fact things were left unexplained, unsatisfying though it may be.
In short, I would definitely recommend this film, which seems to be dusted off and screened late at night on a regular basis by BBC 2 (English terrestrial channel). I know it won't appeal to everyone, but there will be those surrealists who do love it, if only as a fun and bizarre Sci-fi.
