What Is Panama Like?

I am planning a trip to Panama. Not sure why. I don’t know much about the country but I have a free Continental voucher to use up and they fly there directly from New York. That’s a good enough reason for me. Plus, it sounds like a pretty interesting place.

I am sure many of you have been there already. I hear that Panama is trying to brand itself as the new, wilder (and possibly more dangerous) Costa Rica. Any recommendations? Any must sees and must avoids? Are there good diving/rafting opportunities?