I have not read the books, so I can hardly comment on the similarities or differences from the story, feel or characters therein. I thought it was a fun movie, with good actors but with a slightly commercial script.
The Discworld universe is presented in a far more modern light, where magic gives way to technology and economic mechanisms. The entire film is a satire to the present capitalist world and no one is left unscathed. Company owners that cheat and lie and do anything for a bottom line, shadowy and powerful people that change the course of the "free" market as they see fit for their (often petty) needs, ridiculous worker syndicates, corporate spying, bureaucracy, nothing is spared.
However, while it makes for a good social commentary, the film is less funny and definitely less magical than the previous two adaptations of Discworld stories. I would say that if it weren't for the attention to detail of British actors and film makers, this film would probably have felt average.
Bottom line: nice, but I kind of expected a little more.
