Source: Facebook user Mark Zuckerberg
Watch him dump the ice bucket over his head after being challenged by New Jersey Governor Chris Christie, and call out Bill Gates, Sheryl Sandberg, and Netflix CEO Reed Hastings to do the same. "That was really, really cold," he concludes.
And he's not the only Silicon Valley figure to jump on the trend.
Twitter CEO Dick Costolo got in on it.
And so did Microsoft CEO Satya Nadella, who challenged Amazon CEO Jeff Bezos and Google CEO Larry Page.
— Satya Nadella (@satyanadella) August 13, 2014
So since you have to donate money if you don't go through with the challenge, does that mean no one donated?