Say what you will about their personal drama and bad decisions, but when there's a real tragedy, Hollywood celebrities have a habit of getting their acts together and stepping up to help.More than 100 of the biggest names in music, movies and television worked as phone operators in the "Hope for Haiti Now" telethon, which aired Jan. 22 on ABC, CBS, NBC, Fox, CNN, BET, the CW, HBO, MTV, VH1 and CMT. The lineup included Jennifer Aniston, Alec Baldwin, Drew Barrymore, Sacha Baron Cohen, Daniel Craig, John Cusack, Ellen DeGeneres, Zac Efron, Neil Patrick Harris, Debra Messing '90, Jack Nicholson, Adam Sandler, Steven Spielberg, Ringo Starr, Robin Williams and Reese Witherspoon-just to name a few.

The telethon also included performances by Wyclef Jean, Madonna, Bruce Springsteen, Jennifer Hudson, Mary J. Blige, Shakira and Sting in New York City; Alicia Keys, Christina Aguilera, Dave Matthews, John Legend, Justin Timberlake, Stevie Wonder and Taylor Swift in Los Angeles; and Beyoncé and Coldplay, as well as a group performance by Bono, The Edge, Jay-Z and Rihanna in London.

"Hope for Haiti" was hosted by Wyclef Jean in New York City, George Clooney in Los Angeles and CNN's Anderson Cooper reporting in from Haiti. (You may remember the media frenzy and hero worship for Cooper that erupted last week, when footage of him abandoning his camera to rescue a young boy from a violent looting was aired on CNN.) President Bill Clinton was also featured, as well as Brad Pitt, Clint Eastwood, Denzel Washington, Halle Berry, Jon Stewart, Julia Roberts, Leonardo DiCaprio, Matt Damon, Morgan Freeman, Nicole Kidman, Robert Pattinson (Twilight fans, I hope you were watching!), Samuel L. Jackson, Tom Hanks and Muhammad Ali, each of whom briefly addressed viewers to report statistics, share anecdotes and ask viewers to donate to Hope for Haiti Now. The telethon raised over $57 million, benefiting a number of charities including the Clinton Bush Haiti Fund, the UN World Food Program, the Red Cross, UNICEF and Yele Haiti Foundation.