fearlessrick - 2:47 pm on Aug 30, 2010 (gmt 0)
One country that hasn't been mentioned is Panama. There is an interesting site, search for "retirement wave" and you'll find it. Lots of information. The currency is US dollar and the weather compares favorably to Costa Rica, its neighbor. Politically, very safe, protected by US and military patrolling the Canal Zone.
Worth a look, IMO.