This year was definitely 2PM's year because their rise to dominance in 2009 was undeniable. It all started with Again and Again and it's now ending with Heartbeat. So I guess it's only fitting that they ended the year with a special performance of both songs. Watching the two performances side by side like this make you really appreciate just how much 2PM has grown this year. They also added a special Silent Night performance just for Christmas. Let's hope 2010 will bring even more growth for 2PM!