Here’s a brief description by Archaeoblog of the National Geographic show on the latest theory on Atlantis that I blogged a couple days ago.  From the post:

It was interesting and not really all that out there but not terribly convincing. You could say “just excavate” but it’s apparently mostly waterlogged not very far down so just sinking some test pits is probably out of the question, unless you have gobs of money to throw around.