In the upcoming season, the Smiths are back with more mischief and tomfoolery. In Season Seven, Roger travels to the Middle East to show his support for the troops, Stan gets a curse placed on him that causes him to age in reverse and Hayley adopts a baby who turns out to be evil incarnate. Upcoming guest voices include Academy Award nominee Gabourey Sidibe, Cee-Lo Green, Kathy Griffin, Trace Adkins, Hulk Hogan, Cheech Marin, Sarah Michelle Gellar, Alyson Hannigan, David Koechner, Patrick Stewart, Eddie Kaye Thomas and Nathan Fillion.

http://www.freakinsweetnews.com/2011/05/19/a-look-at-american-dads-7th-season