Not sure if we are allowed to provide commercial links or not but there is a Canadian Pharmacy that is still listing Armour thyroid in stock as of today (only some sizes though).
You can get the details by checking out the Save Natural Thyroid facebook campaign site. Some people on there are also listing compounding pharmacies that can make up the natural product…
http://www.facebook.com/pages/Save-Natural-Thyroid/121680434089
As Mebigusmall says, some people like Thyroid-S from Thailand although I read that some people who are gluten-sensitive are not getting on with it.
Erfa thyroid from Canada is another option but if you are in the States, then you have to find a compliant doctor who is willing to fill in some complicated FDA form about importing for ‘experimental use’. Outside of the US it is easy to get with just a prescription.