Popular Delusions & The Madness of Crowds
It's ok for a side read, but don't expect anything ground breaking or 'new truths'.
Gives overviews of 3 market manias around the 1800's. Surprising comparisons can of course be made to the recent tech bubble burst.
If history and the markets/investment is of interest then you may like it. One for Peter Bernstein (Against The Gods - the story of risk) fans.