Arguably the coolest app ever developed for the iPhone, MLB.com At Bat is back in the batter’s box with its 2010 edition. The $14.99 application – which lets you watch and listen to almost every Major League Baseball game – includes new features like a video library that is searchable by player and team, and the ability to choose between home and away broadcast feeds. This grand slam app is also available on Android and BlackBerry devices. Check out a full review here.