Disney has done some non-kiddie animation stuff recently thats turned out pretty good. Tron: Uprising and Avengers: Earth's Mightiest Heroes. Its not all Mickey Mouse and Phineas & Ferb (though a Klingon General D'Oof might be amusing).

Plus to those complaining about family-oriented studios trying their hand at something more adult, I would simply point to Jim Henson Studios. They wanted to show they could be more intellectual than the Muppets, and thus we got Farscape.