I thought it was a good film. I think that the director, Michael Winterbottom, set out to do the opposite of most films dealing with a relationship. He tries to tell the story of the relationship almost only through the couples sex life. His point being that this is at least as legitimate as telling a love story with no sex in it. I think its an interesting and brave attempt by one of the most interesting directors working in England at the moment.
Besides which the 'action' is beautifully lit, the skintones are lovely and the sex is, for me, very erotic....
Can I recommend reading Platform by Michel Houellebecq (just don't ask me to pronunce it!) which sparked off the idea for the film. Its a very good read and an unflinching comment on sex tourism.
Also if you liked the music you should check out 24 hour Party People by the same director. A great and very funny film about the Manchester music scene in the 80's and 90's...
Cheers Sean x