I moved to the US from Canada, thankfully I am pretty healthy and don't need the healthcare system beyond my yearly checkups. The first place I lived had someone who lived down the street who will be paying off a $100k bill until they die because of a heart surgery they had to have. Wonderful system.
On the other hand my father, who still lives in Canada, complained of shortness of breath one Thursday. Called his doctor and was told to go into the emergency room right then. He did, because he didn't have to worry about how much the visit would cost. They found a 90% blockage in his aorta. Was immediately admitted for surgery that occurred Friday. Was free to leave the next week. Total cost, $150.
Ya, US health care system is fucking awesome.