mark S, went to SA on a "tour" with the navy. In all, was down that way for about 10 months out of 16, and visited Panama, Ecuador, el Salvador, Lima Peru, Salaverry Peru, Chile, Guatamala, and Colombia.
There are a lot of tours you can take there, big hit with my crew was Machu Picchu, but it was kind of expensive for them since they had to fly to get there. Lots of Incan history to see. El Salvador had some good tours there also, but very limited due to the threat of rebels hijacking the busses while we were there.
As for the blast comments, I'll just say that Cartegena Colombia, Lima Peru, and Panama City Panama are all great cities to party in. Peru, especially, since it is so economically depressed. We could pay a cabbie 20.00 US and he would run us around all night. Panama same deal was about 30.00. Night clubs are awesome, pisco sour's taste great. Cuban cigars are readily available for those that like them. Chicas are also very pretty.