I've Always Liked This Film
I used to run a video store when this came out, and remembering being quite impressed by this at the time.
Now to find it on DVD. The search beings...
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Wait a minute... who am I here?
It's actually available on DVD (I really loved this film when I saw it years ago as a rental) and it was one of the first DVDs I ever imported off Amazon when they started allowing them to be sold overseas. I don't know if it's still "in print", but that's where I got mine (about four years ago, I think).
Hope you find it... fans of this little film seem to be few and far between!
I saw this film as a teenager and have always liked it and remembered it, it's interesting how they ramp up the tension in a limited space like that.
http://www.youtube.com/watch?v=GAIJ3Rh5Qxs