I'm bummed that I missed this as it was unfolding--I was too absorbed by my own holiday-time stress--but so glad to see it today that I just have to share.
A man named Patrick O'Brien, who looks to be the digital director for KTTV Fox Television in Los Angeles, tweeted his reunion with his birth mother between December 21-22. The entire saga, tagged with #POBJourney, is captured for easy reading on a Storify page here.
I don't want to be a spoiler, but let's just say this is a pleasant ending to 2013!