Moore has often been accused of twisting the facts but in this case he just seems to avoid trying to present any particularly controversial ones at all. Obviously, there is much to dislike about America's healthcare system (though much has also changed since this film's release) but 'Sicko' provides a fairly shallow look at the issues in question. For example, he interviews a bunch of Europeans so that Americans can hear from others how unlucky they are. You can't help but feel like that's a little lazy.
Still, I find Moore entertaining and enjoy his stunts, some of which are on show here and this is certainly the kind of topic that one would expect Moore to make a film about.
The film isn't as relevant as it once was (heck, certain elements of it were out of date by the time the film even came out) but this isn't one to watch to learn facts. it's really just an entertaining look at the, completely flabbergasting, disparities between different Nation's approaches to healthcare.