AP Photo/Matt Sayles
A bevy of stars are set to appear on the "Stand Up to Cancer" telethon on Friday, Sept. 10, 2010.
Gwenyth Paltrow, seen here at the premiere of "Iron Man 2" on April 26, 2010, is just one of the stars scheduled to participate. Here's a look at some of the others.
AP Photo/Chris Pizzello
Michael Douglas arrives at the AFI Lifetime Achievement Awards honoring director Mike Nichols, presented by TV Land at Sony Pictures Studios on Thursday, June 10, 2010, in Culver City, Calif.
The actor's publicist confirmed to Access Hollywood on Sept. 8 that Douglas, who was recently diagnosed with throat cancer, will appear on the telecast.
AP Photo
Actor George Clooney is seen here at the 2009 New York Film Critic's Circle Awards at Crimson on Monday, Jan. 11, 2010 in New York.
AP Photo/Matt Sayles
Reese Witherspoon arrives at the 13th Annual Unforgettable Evening benefiting the Entertainment Industry Foundation's Women's Cancer Research Fund in Beverly Hills, Calif., on Wednesday, Jan. 27, 2010.
AP Photo/Bas Czerwinski
Lance Armstrong smiles when being greeted prior to the sixth stage of the Tour de France on Friday, July 9, 2010. The cyclist and cancer survivor will be among the celebrities participating in the telecast.
AP Photo/Chris Pizzello
Jane Lynch arrives at the Creative Arts Emmy Awards on Saturday, Aug. 21, 2010, in Los Angeles.
AP Photo/Matt Sayles
Lady Antebellum attends the 2010 CMT Awards in Nashville, Tenn., Wednesday, June 9, 2010.
The country trio are among the performers participating in the "Stand Up to Cancer" telecast.
AP Photo/Matt Sayles
Actress and cancer survivor Christina Applegate arrives at the annual Backstage at the Geffen Gala in Los Angeles on Monday, March 22, 2010.
AP Photo/Shorenstein Hays Nederlander, Lyn Hughes
Denzel Washington poses on the opening night of the Broadway play "Fences" on Monday, April 26, 2010, in New York.
AP Photo/Evan Agostini
Actress Renee Zellweger attends a screening of "My Own Love Song" during the 2010 Tribeca Film Festival on Thursday, April 22, 2010, in New York.
AP Photo/Jae C. Hong
Actor Will Smith is seen before the Floyd Mayweather Jr., Shane Mosley fight Saturday, May 1, 2010, in Las Vegas.
Alberto E. Rodriguez/Getty Images
Sofia Vergara arrives at the 16th Annual Screen Actors Guild Awards on January 23, 2010 in Los Angeles.
The Emmy-nominated actress and cancer survivor is among the stars set to participate in the 2010 "Stand Up to Cancer" telecast.
John Shearer/Getty Images
Actor and cancer survivor Michael C. Hall speaks at the Anti-Heroes of Showtime panel during day 1 of Comic-Con 2010 on Thursday, July 22, 2010, in San Diego.
AP Photo/Alastair Grant
Leona Lewis arrives at the Brit Awards 2010 at the Earl's Court Exhibition Center in London, Tuesday, Feb. 16, 2010.
The British singer will be among the stars performing at the "Stand Up to Cancer" telecast.
AP Photo/Evan Agostini
Model Cindy Crawford attends the DKMS Linked Against Leukemia Gala at Capitale on Wednesday, May 7, 2008, in New York.
AP Photo/Evan Agostini
Rob Lowe attends the gala screening of "The Invention Of Lying" during the Toronto International Film Festival on Monday, Sept. 14, 2009, in Toronto.
GETTY IMAGES/Stephen Shugerman
Maura Tierney arrives at the 2007 Creative Arts Emmy Awards at the Shrine Auditorium September 8, 2007, in Los Angeles. The actress, who is a cancer survivor, is among the stars set to participate in the "Stand Up for Cancer" telecast.
Photo by Jason Merritt/Getty Images
U.S. Olympic short track speedskater Apolo Ohno arrives at the 2010 ESPY Awards at Nokia Theatre on July 14, 2010, in Los Angeles
David Livingston/Getty Images
Actor Jim Parsons attends the 31st Annual College Television Awards at Renaissance Hollywood Hotel on April 10, 2010, in Hollywood, Calif. The Emmy-winner will be among the stars participating in the "Stand Up to Cancer" telecast.
AP Photo/Matt Sayles
Actress Laura Linney, a cast member in "The Big C", on which she plays a woman who is diagnosed with terminal cancer, participates in a panel discussion at the Television Critics Association summer press tour in Beverly Hills, Calif., Thursday, July 29, 2010.
AP Photo/Gus Ruelas
Actor/producer Seth MacFarlane arrives at the Twentieth Century Fox Television and FX Primetime Emmy Nominees party, Sunday, Sept. 20, 2009, in Los Angeles.
AP Photo/Gail Kamendish
Marg Helgenberger arrives at the 135th Kentucky Derby at Churchill Downs Saturday, May 2, 2009, in Louisville, Ky.
AP Photos/Chris Pizzello
Zachary Levi arrives at the Teen Choice Awards on Sunday, Aug. 8, 2010, in Universal City, Calif.
AP Photo/Gail Kamenish
Actress and cancer survivor Fran Drescher arrives before the 136th Kentucky Derby horse race at Churchill Downs on Saturday, May 1, 2010, in Louisville, Ky.
AP Photo/Lefteris Pitarakis
Neil Diamond arrives for the dinner birthday party of former president of South Africa Nelson Mandela in central London's Hyde Park, Wednesday June 25, 2008.
Diamond is among the performers scheduled to participate in the "Stand Up to Cancer" telecast.
AP Photo/Katy Winn
Abigail Breslin arrives at the world premiere of "Scott Pilgrim vs. The World," on Tuesday July 27, 2010, at Grauman's Chinese Theatre in Los Angeles.
David Livingston/Getty Images
Actor Eric Stonestreet attends the Disney ABC Television Group's Summer TCA party at the Beverly Hilton on Aug. 1, 2010, in Beverly Hills, Calif.
AP Photo/John McConnico
Natasha Bedingfield performs at the Nobel concert in Oslo, Friday, Dec. 11, 2009. The British singer is among the stars set to perform during the "Stand Up to Cancer" telecast.
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Actress Sally Field attends The Film Society of Lincoln Center gala tribute to honor actor Tom Hanks at Alice Tully Hall on Monday, April 27, 2009, in New York.
John Harrington Photography
Ethan Zohn crosses the finish line on Dec 1, 2008, World AIDS Day, as he completes his three-month, 550-mile soccer dribble, from Boston to Washington, to raise money for his organization Grassroot Soccer and its mission to end AIDS in Africa. The "Survivor: Africa" winner and cancer survivor is among the stars participating in the "Stand Up to Cancer" telecast.