What's the best way to call home from Cancun??

Also, as a side note...

I have some fancy calling card that has a local Mexico 800 number that I call to get 24 cents per minute (or 60 cents per minute, can't remember which) and when calling from the room phone the hotel indicated there would be a one-time $5 connection charge for connecting to any 800 number.

they indicated this fee can be avoided by using the "pay phone" in the lobby.

hope that helps!