I'm not sure anyone thinks Moose is THAT good anymore...thus disqualifying him from the "overrated" contest. He used to be great, though.
I'd put Jeremy Bonderman on that list for this year...immensely talented, but he's shat the bed this season compared to what was expected of him.
I'd also put Bronson Arroyo on that list, at least for earlier this year, back when people thought he was pretty damned good.
And A.J. Burnett should always appear on this list.