Wall Street's obsession in the second half of 2006 will be the same as it was in the first: the Federal Reserve. As everyone knows, the markets were whipsawed in the first half of the year as investors tried to get a read on newly installed Fed Chairman Ben Bernanke and his views on inflation and interest rates. Some days, it seemed the only thing that mattered to Wall Street traders was dissecting, interpreting and then dissecting again even the most banal utterances by Bernanke on inflation. Stocks shot up whenever people believed Bernanke and his fellow Fed governors were poised to put the brakes on rate hikes. They fell just as hard whenever Wall Street sensed Bernanke & Co. were more concerned about keeping a lid on inflation than making nice with investors. As the first half of 2006 came to a close, Wall Street was still unsure of Bernanke's plans for the rest of the year. But many bulls saw hope in the Fed's announcement last Thursday that it might be able to go slower on future interest rate hikes depending on economic events on the ground. Of course, the Fed made those "friendly'' noises about future interest rates after voting to raise the Fed Funds rate for the 17th time in 17 straight meetings to 5.25% -- its highest level since March 2001. Expect the debate about Bernanke & Co. to rage on for the rest of the year, or at least until the Fed meets and actually doesn't raise rates for a change. Away from the Fed, there's plenty for investors to watch in the next six months. Here are few things that could have just as big of an impact on stock prices in the coming months as Bernanke & Co.