George Clooney and Wyclef Jean have been working furiously to raise funds and secure participants for the "Hope for Haiti Now: A Global Benefit for Earthquake Relief" telethon, presented by MTV Networks on Friday at 8 p.m. ET/PT.

The undertaking is expected to be one of the biggest charitable efforts ever. All proceeds from the telecast will be split among five relief organizations actively operating in Haiti: Oxfam America, Partners in Health, the Red Cross, UNICEF and Wyclef's Yele Haiti foundation.