'Denalism' by Michael Specter actually discusses the anti-vaccine movement and a bit about autism. I felt he did a good job. The fact is that there is no evidence supporting the conclusion (cue "correlation is not causation"). Also, diagnosis for specific problems would help patients and families get much better aid from insurers and schools. Sadly, we allow those who can provide no actual evidence influence the discussion (glad to see you didn't)

I agree with pragmatic, we need to look at real causes and remember that outside of clean water, vaccinations are the best thing for public health.