The following groups will be disappointed in the first Obama administration and in this order:
1- The far Left. (Maddow, etc.)
2- Many Black Americans
3- Arabs and Muslims
4- Characters like Chris Matthews.
Starting in five, four, three...
I wouldn't count on the likes of Stephen Colbert, Jon Stewart and Glenn Greenwald (three of the Bush administration's sharpest critics) to seem as "liberal" as they were for the past couple of years either.