One thing he said in this movie made his arguments in later movies moot.
"They call it 'Great Britain', but there's nothing great about it'.
Yet in Sicko he goes on and on about the British healthcare system and how great it is.
On top of being a massively insulting comment to British people, he then goes ahead and praises our healthcare system in Sicko? I used to like him until I saw this movie. I think it shows his true colours, he's quick to dismiss anything as crap until it somehow benefits his point, then it's great.
The point he fails to mention is that "Great Britain" isn't a boastful name as he seems to take it. It comes from the Latin name for the island: Britannia Superior, meaning "Greater Britain", since it is the largest of the British Isles.