What Hollywood Stars, Celebrities Have Been Doing to Help: Celebrity Do-gooders Step Up

Doctors Without Borders announced Wednesday that Brad Pitt and Angelina Jolie were contributing $1 million to the organization's emergency medical operations responding to the earthquake.

• Ben Stiller tweeted late Tuesday that "people in Haiti need our help and attention right now." Hilton, Lindsay Lohan, Adam Lambert and Ryan Leslie also tried to spread the word to the masses via Twitter.

• Colombian singer Shakira, on her Web site, called for donations to Yele and to UNICEF.

• Coldplay singer Chris Martin urged people to donate to a Haiti appeal set up by the charity Oxfam.

"I visited Haiti with Oxfam a few years ago. It's a country of extreme poverty and brutal living conditions," Martin said. "Most people in Port-au-Prince live in tin shacks. The earthquake that has struck Haiti will have turned the city into an unimaginable hell."

• Oprah Winfrey began her television talk show Wednesday by asking viewers to donate to the Red Cross. "This is a time where we, as a global nation, should come together and support those who are in need," Winfrey said.

Thanks to Madonna for Donating to Haiti: $250 Haiti Earthquake Relief Donation

Here's Madonna's statement on the Jan. 12 quake in Haiti: “My prayers are with the people of Haiti,” she says. “I can’t imagine the terrible pain and suffering they are experiencing. Sadly the depths of the tragedy are just becoming known and the need for our support grows more urgent with every passing moment. I have given a donation of $250,000 to assist Haiti’s earthquake victims through Partners in Health (www.pih.org), one of Haiti’s leading health care providers. I urge all of my friends and fans around the world to join me collectively to match my contribution or give in any way you can. We must act now. Thank you for your support.”