Bangladesh is also a bad choice because the whole country is just a few feet above sea level.  If the oceans rise 20 feet then most of the country will be below sealevel and possibly underwater.  Ditto with most Caribbean islands.  Sorry to burst your bubble there, buddy :P

The best choices, IMO, are countries that still have large surpluses of oil and gas.  But they also run the risk of being invaded too, so it's a little give-and-take.

Well, we have more than a few good estimates on when Peak Oil will occur (or when its already occurred), but are there any educated guesses as to when the oceans will rise 20' due to Global Warming? As I understand it, such an event isn't as imminent as Peak Oil, though I'm not as well informed on that subject.

I'll say this: if the oceans do rise 20', a lot more places than Bangladesh and the Caribbean islands will be in deep trouble. I guess we just have to pick our poisons. No place is going to be perfect in the coming collapse scenarios.

I think the estimate used to be 20' over a century, but I don't keep up with this at all.  I do know there is a bunch of good stuff at the RealClimate site:

http://www.realclimate.org/index.php?s=sea+level&submit=Search

I appreciate the link, odograph. That's a great source.