Buy anything: 2010 should be a can't-lose year for investors

Now that Goldman Sachs has forecast that 2010 will be a good year for stocks (and if they expected a lousy year, do you think they'd announce it or just quietly sell?), it's official: All four widely held asset classes -- stocks, bonds, precious metals and real estate -- are expected to continue rising in unison.

The Fed has announced that interest rates will stay near-zero for the foreseeable future, bolstering bonds. Thanks to massive government support of the mortgage market, real estate has "turned the corner." And gold is believed by many analysts to be on its way to $1,350 at a minimum.