Every January, a combination of rolled-over digits on the calendar year and the massive Consumer Electronics Show in Las Vegas get techie brains spinning about what's to come in the months ahead. In 2008, smartphones were the talk of the town. In 2009, ultra-thin TVs with LED backlighting stole the show. This time around for technology enthusiasts, it's, well, any number of hot up and coming trends. From the much-talked-about 3D TV to long-awaited rise of the streaming media box, here are the trends that many believe will define 2010, along with a healthy dose of reality that could cut many of them down to size.