I've been fortuante enough to have been to many of those places. Right now my short list includes:
Peru and specifically Machu Pichu
India
Egypt
Tanzania
Russia
Places I would like to go back to:
Austrailia & New Zealand (been to both a couple of times, one of my favorites!)
Thailand - Great country, beautiful, exotic, excellent food, friendly people...
Fiji - What can I say, just a great place.
All of Europe altough I haven't made it to Poland, Hungary, or some of the former eastern European countries.