Honestly, I have no love of Moore and his smug presentation of what are otherwise very important issues that deserve serious attention in the public sphere. He has a presentation style that, when trying to look at an issue as objectively as possible, can very seriously tend to poison the well.
However...
I would not be opposed to having Moore's "Sicko" played on one or several television stations across the nations. The well is already poisoned, so to speak, so I wouldn't fear this film causing more damage on a net basis (though I do recognize it would drive FOX News rabid). Instead of causing an increase in the dissonance of the public discourse, my estimation (based on having watched it and admittedly not agreeing with all of its presentation) is that instead of adding to the dissonance it would most likely cancel out the stupidity on the other extreme of the political spectrum, sort of an opposite frequency causing the both to level out, at which point more informative and serious presentations could be given to the public for consumption.
You know, I do have what could be called a "success story" of our current healthcare where not only my life was saved, but I actually got treatment that prevented me from having life-long detrimental effects (to a degree) due to the damage my body took. My healthcare, while admittedly taking some wrangling on my end after the initial trauma care, kept me mostly covered meeting follow-up doctors and getting physical therapy, getting me back to what most estimates would consider about a 90 to 95 percent recovery (100% would have been impossible... I was effed up pretty badly). What would seem to be a bombshell is that the insurance coverage I was under was given to me even though I was a temporary contracted employee. So, obviously, while it should be noted that anecdotes could be found where there are massive failures in healthcare in the US and abroad, there are also resounding successes. The question is which would be most likely for the average citizen (depending on the country one lives in). My estimation, not based on Moore's film but in the details and fact-based arguments out there, is that a nationalized healthcare system will have a higher likelihood of successes than the current privatized healthcare in the US.
Moore's film is fine at displaying the drama and emotional aspects of the issue that exists in spades. Unfortunately, it's very scarce on providing actionable facts and explanations for the general public on the issue (though in a few parts it comes close to touching on them). I'm unsure on what kind of point-by-point of the film could be presented, because there aren't many separate points to be filtered out and addressed separately-- in actuality, the film consists of a few stark emotionally-based points and appeals to ridicule throughout, and it all boils down to the last few minutes of the film where Moore poses the question of why we oppose national healthcare since it (obviously, according to the film) is the more efficient and effective system. The real answer to such a question is pretty plain and apparent: not everyone is convinced it's a better system.