Here is a website with vet ratings across North America:
Find a Veterinarian - Veterinarian Reviews and Ratings - VetRatingz.com
I found this site very helpful, when choosing a vet. I searched vets for my city and than used a "sort by average rating" feature. There was one rated 5 out of 5, and that is the one that I made an appointment with. This vet turned out to be really wonderful, couldn't be happier.