Starting next week, Ben Affleck will be living below the poverty line.

No, he's not the latest celebrity to avoid paying Uncle Sam for years. The actor-director tweeted that he is going to feed himself on a mere $1.50 per day for five days as part of the "Live Below the Line" campaign, which is a Global Poverty Project initiative to create awareness of poverty issues in the U.S. The campaign runs from April 29 to May 3.

Josh Groban and Sophia Bush are among the other celebrities taking part in the campaign.

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According to the campaign website, more than 1.4 billion people around the world live on less than that amount each day as their food budget. Last year, the event helped raise more than $3 million dollars for poverty relief efforts in the U.S.

Ben has been a noted philanthropist throughout his career. He supports the the A-T Children's Project, which raises awareness for the rare disease ataxia-telangiectasia. In 2010, he also formed the Eastern Congo Initiative, the first U.S.-based advocacy and grant making initiative solely for the people of eastern Congo. Now, he'll presumably be chowing down on a lot of ramen and rice for a week in order to bring awareness to this cause.

Of course, Ben won't be near the poverty line anytime soon. He and wife Jennifer Garner have a reported net worth of $100 million, and Ben's star status is only growing thanks to his Oscar win for Argo.

What do you think of Ben's effort to live below the poverty line?

Photos courtesy of Getty Images