I found this film by accident while shopping a sale of used DVDs at my local video rental store. I hadn't heard of it but Kathy Bates is always worth watching, so I didn't even look at the back of the package for the rest of the credits.
I got it home and was hooked from the beginning credits when the singer turns around and it is Jonathan Pryce. (I fell in lurrrrrrrve with his voice years ago in "Jumping Jack Flash, in which he IS just a voice for most of the film.) And even though he sings the most incredibly cheesy songs imaginable here, if there was a soundtrack I would buy it in an instant.
I enjoy movies which aren't easy to categorize. Here on IMDb it is listed as a Drama/Comedy/Musical/Thriller. That sums it up pretty well as far as I am concerned. If you need to have every little thing in a movie spelled out clearly and make perfect sense you will probably not enjoy this one. The whole movie has a slightly surrealistic feel and I loved the way it flows between reality and fantasy. It reminded me of Harry Sinclair's wonderful "The Price of Milk", but that wasn't a film for everybody, either.
Incidentally, no one so far seems to have mentioned the first credited screenwriter, Jocelyn Moorhouse. If you did like "Unconditional Love", you might want to see another film she wrote and directed called "Proof", with Hugo Weaving and Russell Crowe. It also was very strange/odd/beautiful/moving and hard to classify.