Darsteller und CrewLarry DavidHimself - Actor / Comedian / Environmental ActivistSheryl CrowHerself - Musician / Environmental ActivistBarbara BoxerHerself - Senator - CaliforniaGeorge W. BushHimself - President of the United StatesRichard BransonHimself - Founder, Virgin GroupJoshua TickellHimself / narratorJohnny O'Haratvm.persons.postions.author