The actor, who was nominated to take the challenge by Tyler Perry, shared a video of himself fulfilling it in front of a pool on Facebook. The Argo star nominated three more people he knows "look good in a wet t-shirt" to complete the dare, including Jimmy Kimmel, Neil Patrick Harris, Matt Damon, and his wife, "the lady with the bucket."
Because Garner decided to throw the ice bucket on the actor while he was still talking, Affleck grabbed her and dragged her into the pool with him. A kid, likely one of the couple's three children -- Violet, 9, Seraphina, 5, and Samuel, 3 -- can be heard laughing in the background as the scene unfolds.
The ALS Ice Bucket Challenge is a social media trend where challenged people have to choose between dumping a bucket of iced water over themselves or donate $100 to the Amyotrophic Lateral Sclerosis (ALS) research. Affleck said he'd also be donating money for the cause.