The Mobile World Congress (MWC) in Barcelona has become the premier platform to unveil the latest and greatest smartphones, and 2010 is no different. With Google Android and Microsoft Windows Phone 7 taking center stage, along with other mobile operating systems, the biggest smartphone movers and shakers unveiled their latest wares on the gadget-hungry public. While device makers aplenty pulled the curtain off of new smartphones and MWC 2010, we found 10 of most exciting from the likes of Acer, HTC, Huawei, Motorola, Samsung and Sony Ericsson and compiled them here.