Keaton himself certainly seemed surprised. "Shoot, two things I said I wasn't going to do: Cry and give air quotes," Keaton joked.
The emotional moment, one of the most memorable in all of the night's speeches, came as Keaton, 63, acknowledged his parents, his six brothers and sisters -- and, above all, his son.
"My best friend is kind, intelligent, funny, talented, considerate, thoughtful," Keaton said, his voice catching. "He also happens to be my son, Sean. I love you with all my heart, buddy."
After the camera panned to a shot of Keaton's son, Sean Douglas, 31, in the crowd, the Twittersphere quickly filled with swooning reactions. "Oh hello, Michael Keaton's son," Mindy Kaling tweeted.
Douglas is the only child of Keaton and actress Caroline McWilliams, to whom he was married from 1982 to 1990. McWilliams died of cancer in 2010 at age 64.
He is an accomplished singer-songwriter and music producer who has worked with artists including Madonna,
Backstage at the Globes, Keaton said the first thing he'd do to celebrate would be to get rid of a headache that developed during the show.
"I guess there was a little more tension in the room than I thought," he said with a laugh.
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