Video: Very emotional: A tearful dad sends a message to Mark Zuckerberg & Facebook responds

John Berlin, a Missouri man shot an emotionally raw, 84-second clip on his phone and posted it Wednesday morning to YouTube and Facebook. By late afternoon it had hundreds of thousands of views and he was deluged with Facebook messages. All John wanted was a Facebook video of his son, Jesse who died at the age of 21 in 2012.

Then, that night, Facebook called.

As Berlin listened, stunned, they told him would indeed make a personalized "A Look Back" video for his late son Jesse, using posts he had made public on Facebook before his death in 2012 at age 21. Now Berlin is planning to share it online as a tribute to his late son.

"I just wanted a piece of him," he told CNN in a phone interview. "These (Facebook) videos really touched me. And every time Jesse would pop up (in one of them), I was choking back tears. I just wanted so desperately to see how his video would turn out."

Facebook created the customized videos for most of its active users Tuesday to celebrate its 10th anniversary. The 62-second clips note the year the user joined Facebook, then show a handful of their most-liked posts and a seemingly random selection of their photos -- all set to instrumental music.

A Facebook spokesperson said Berlin's video came to the attention of a staffer Wednesday, who shared it on an internal network.

"I'm glad that we're finding purpose in Jesse's death," he said. "I can't express how much this means to me."

Watch the emotional vid.below.