Stars Politically Aligned

We know Daddy Yankee endorses Mccain but what about other atists endorsing presidential candidates...
Here is a list...
Geoege Clooney...Obama
Fat Joe...Obama
Dave Matthews...Obama
Robert De Niro...Obama
Stevie Wonder...Obama
Harry Connick Jr...Obama
Usher...Obama
Jeff Tweedy (Wilco)...Obama
The Goo Goo Dolls...Obama
Will Smith...Obama
Conor Oberst (Bright Eyes)...Obama
Oprah...Obama
Hale Berry...Obama
Cocoa Tea...Obama
Heidi Montag...Mccain