A Resurgent Dollar Could Be 2010's First Surprise

This year sure was packed with stunning turnarounds: Few foresaw a soaring stock market but tumbling approval ratings for President Obama. And it may have one last twist in store for investors.

Many investors saw a crumbling dollar as a sure bet in the wake of the Federal Reserve's unprecedented liquidity injections, but over the last month the greenback has instead mounted a sharp turnaround. And while the mainstream sentiment remains negative on the currency, a high-profile minority of investors – with both more bullish and bearish economic outlooks than most -- are now betting that the rally will continue into the new year.