Finally, my anecdotal evidence: I am highly satisfied with the care that I receive at the VA. I have 20% disability due to a significant loss of peripheral vision in my right eye. I am scheduled yearly for an annual physical including urine and blood work, a field scan with my eyes to test regressions, and two general appointments with an optometrist. I also have free access to nutritionists and weight support groups since weight management can be an issue for veterans. Is it perfect, no, but I have never felt that I didn't get the care that I needed in a reasonable amount of time.
[1] http://www.va.gov/opa/pressrel/pressrelease.cfm?id=2537
[2] http://online.wsj.com/articles/no-deaths-caused-by-delays-at...
edit: formatting
Some systems in the US, especially Kaiser, are basically a socialized system supported by premiums, and seem to work pretty well.