For the last few days the ALS Ice Bucket Challenge has been doing the rounds online to combat Lou Gehrig's disease. So far, several cast and crew from the Marvel Cinematic Universe have taken part. Scroll down for the videos and click here to take part yourself and donate to the cause:http://www.alsa.org/fight-als/ice-bucket-challenge.html
Robert Downey, Jr. (with some help from Susan Downey):
Jeremy Renner and Sam Rockwell (with some help from Leslie Bibb):
Josh Brolin (warning - contains nudity):
Sebastian Stan and Anthony Mackie:
Ming-Na Wen and Brett Dalton: