does anyone know of good Siberian husky breeders in and around Toronto?

Check with the CKC for breeders & specific breed clubs.
References :
http://www.ckc.ca

I don't know of any personally - but you can always check the CKC (Canadian Kennel Club) website to find a breed club close to you.

You may also want to check out the local animal shelters - you may be surprised at how many purebreds need homes. I've seen huskies, malamutes, great pyr, and even great danes at shelters.
References :
http://www.ckc.ca

http://search.petfinder.com/search/search.cgi?pet.Animal=Dog&pet.Breed=husky&pet.Age=&pet.Size=&pet.Sex=&location=Toronto%2C+ON

Here are some huskies and husky mixes in shelters and rescues near toronto.

specifically siberian huskies only:
http://search.petfinder.com/petnote/displaypet.cgi?petid=9107721
http://search.petfinder.com/petnote/displaypet.cgi?petid=6973086
http://search.petfinder.com/petnote/displaypet.cgi?petid=9122669

Please adopt and save a life
References :

my favorite is
http://www.allegrohuskies.com/
References :
Allegro huskies!