I would love to go to th Maldives. With global warming and sea levels rising, they wont be around for very long as most of the islands are only 1ft above sea level. Think i heard they will disappear under the ocean in the next 50 years or so.
Would also love to visit canada, and go whale watching while i was there.
As for recommend - I love New York for sight seeing (christmas time is definately the best time to go), Cancun for clubbing , Egypt for snorkelling, Zante in May to swim with turtles and of course Windermere/Bowness for something closer to home.