The ALS ice bucket challenge has taken the internet by storm. The ALS Association has raised $15.6 million so far to research Lou Gehrig's disease. Celebrities such as Oprah, Lebron James, Mark Zuckerberg, and even Dr. Dre have completed the challenge. In fact Tim Cook challegend Dr. Dre to the ice bucket challenge and he accepted. Shortly after he challenged Eminem, Kendrick Lamar and Snoop Dogg. Oh, and Eminem who rarely tweets accepted his friends challenge. Check it out.