Go see Razib's post on some funny investing books and their raving reviews. Among them:
"Dow 30,000 by 2008" Why It's Different This Time
Why the Real Estate Boom Will Not Bus - And How You Can Profit from It: How to Build Wealth in Today's Expanding Real Estate Market
The Rules for Growing Rich: Making Money in the New Information Economy (written of course at the peak of the dot.com bubble)
I guess every genius is misunderstood in its own time.