ALS, or Amyotrophic lateral sclerosis, is a fatal neurodegenerative disease that attacks the brain and spinal cord. The ALS Ice Bucket Challenge involves a famous person throwing a bucket of ice water over their head and nominating 3 people who have 24 hours to accept and complete the task. They then have to nominate 3 more people. If they don’t accept the challenge then you have to donate to the cause. Or do both.

Anyway, Bill Gates being Bill Gates engineered his own rig. And below are the videos with Jeff Bezo up first. Jeff had a few crazy initial suggestions for his 3 nominations. The last video is Tim Cook pouring a bucket of ice water over his head.

As crazy an idea this ice bucket is, it has raised so far over $4.4m. Incredible.