Well, I've never personally read the book, (actually, I've never even HEARD of it before reading about it on CP), so I went and saw the flick last night to see what all the hype was about.
I thought the movie was brilliant. It came across as a bit of a blend of humour types, one being the dry, witty "English" style, mixed with a little in your face, slap stick "American" style. While I imagine this movie is not going to appeal to everybody, anyone with a bit of a twisted sense of humour will laugh their ass off. Marvin was gut busting hilarious, as well as some of the ridiculous lines and events that were written in.
"Run away....he's got a towel!!!!"
I'd recommend it to anyone, it's a really neat story line with some pretty hilarious, almost "campy" special effects. Worht the $12 or whatever it is they charge for movies nowadays.