Watch an extended cut of Eminem and Rihanna's ALS Ice Bucket challenge.
Em, who was challenged by Dr. Dre is the first to take the plunge, subsequently nominating RiRi on the spot. While we saw pieces of the footage via fan-made Instagram clips earlier this week, the full professionally shot clip is now online.
Em also nominated Rick Rubin for the challenge, who decided to take a full-on ice bath in his video. Who's had your favorite challenge so far?