MTV legend Kurt Loder seems to have written the definitive critique of SiCKO:

Unfortunately, Moore is also a con man of a very brazen sort, and never more so than in this film. His cherry-picked facts, manipulative interviews (with lingering close-ups of distraught people breaking down in tears) and blithe assertions (how does he know 18 million people will die this year because they have no health insurance?) are so stacked that you can feel his whole argument sliding sideways as the picture unspools. The American health-care system is in urgent need of reform, no question. Some 47 million people are uninsured (although many are only temporarily so, being either in-between jobs or young enough not to feel a pressing need to buy health insurance). There are a number of proposals as to what might be done to correct this situation. Moore has no use for any of them, save one.