Now clearly I'm biased - I work on vaccines for viruses - but I love the Australian 'No jab, no play' law (http://www.mvec.vic.edu.au/immunisation-references/no-jab-no-play/). We learned about it on Wednesday when we enrolled El in school. The gist of the law is that students must be vaccinated or must stay home from school whenever there is an outbreak of vaccine-preventable disease at school. This still gives families the ability to opt-out of vaccination if they have deeply held convictions, but they are responsible for their kids' educations if their presence in school could threaten others. Utterly reasonable.
In order to comply with the policy, we need an Australian vaccine registration. This was even more impressive. We went to the Children's Hospital in Melbourne and gave them a list of Eli's vaccinations. They took about thirty minutes to cross-reference it against their requirements, identified two differences, and gave Eli two shots (he wasn't thrilled about this part). Total cost to us - $0. And then we were compliant.
Really impressive.