Lady Gaga, Justin Bieber, Oprah top charitable celebs of 2010

  Megastars like Sandra Bullock, Justin Bieber, Lady Gaga, Oprah Winfrey and Prince William have a lot to be thankful for this holiday. The luminaries are getting a little shout-out for their generosity as well.
DoSomething.org, an online portal that helps link youth with volunteer opportunities, has publishing a list of "Celebs Done Good" for 2010.
Bullock scores points for her support of education for low-income kids in Louisiana, Bieber gets big ups for his work with children's hospitals, and so do Gaga for her very public support over the repeal of DADT, Winfrey for her overwhelming generosity in general and the newly engaged William for his work with homeless youth in Britain.
Rounding out the list are Leonardo DiCaprio, getting props for his interest in endangered tigers; Ellen DeGeneres for her support of the Trevor Project and its efforts to prevent anti-gay bullying; Nick Jonas for his activism around diabetes; and Matt Damon for his longtime passion project in providing clean water water around the world.
Jake Gyllenhaal's main squeeze, Taylor Swift, gets a nod for her flood-relief efforts in Tennessee, Alicia Keys gets props for her much-covered "Digital Death" campaign in support of Keep a Child Alive, and Ashton Kutcher and Demi Moore are recognized for their efforts to prevent child sex trafficking.
Check out the full list here, and tell us your favorite charitable celeb in comments below.