Saturday
• In the nation's largest one-day food drive, America's letter carriers will be delivering mail and collecting non-perishable donations for the 17th annual Stamp Out Hunger campaign.
• Comedian Wanda Sykes will be the roaster-in-chief at the annual White House Correspondents' Association dinner. President Obama is expected to play his inaugural role as the presidential pineta. Watch it live on C-SPAN.
• Jacob Zuma as president will be inaugurated as president of South Africa.
• Indians continue to vote in the month-long General election. This round ends next week.
Sunday
• It's her official special day, so be extra nice to your mother. Or else.
• Vice President Joe Biden delivers the commencement address at Syracuse University.
Monday
• The space shuttle Atlantis is scheduled to launch at 2:01 p.m. ET on its mission to repair the Hubble Space Telescope for the last time.
• The National Zoo, Defenders of Wildlife and other groups hold a briefing about the plight of amphibians, protections and recovery efforts.
• Lawanda Jackson is scheduled to be sentenced for viewing medical records of celebrities treated at UCLA Medical Center.