Long term investment in the stock market and a new documentary.
There's a new documentary on the stock market crash out examining the knowledge that bank executives (and the like) had regarding the potential for collapse:
Of course, the same conflicts of interest apply to pretty much any investment advisor.
On a related note, The Atlantic recently published an article entitled The Great Stock Myth: Why the market’s rate of return—and your nest egg—may never recover looking at long-term analysis of the stock market. Reminds me a little of another article on a similar topic a while back.
I'd argue that the elephant in the room is still population aging though.