Robert Downey, Jr. Takes Ice Bucket Challenge, Calls Out Avengers Pal (VIDEO)
On Saturday, the Iron Man star posted a video in which his wife Susan does the honors, dumping ice on the actor to help raise awareness for ALS research.
Downey challenged his Avengers co-star Chris Hemsworth to follow suit.
Meanwhile, Oprah challenged Steven Spielberg and Helen Mirren to get wet, shortly before Gayle King doused her with freezing water.
We can still hear her screams.
Check out the videos below!