So here's the card I've decided to add to my emergency gear.

The Sam's Club 3.47 cent per minute card.
Here are it's features.
-No Experation Date
-Voice Dialing
-Operator Assisted Dialing
-No First Minute Surcharge
-International Calling
-Rechargable (credit can be added to it) Can be recharged using an automated system or with a live operator.
-Speed Dial

It is the only card I've found that has all of these features.

And for those interested here are the numbers you would use when calling from Mexico and Canada.

From Mexico dial 001800-462-4240 or 01800-288-2872 then the PIN and the area code and 7 digit number in the US.

From Canada dial the toll free access number of the phone card and use the card as you would if you were calling from within the US. If that does not work dial 1-800-CALL-ATT / 1-800-225-5288