Yeah, he and the talking pig (from Dinklemeyer) are fan favorites for some reason. I guess they just have that appeal to them.
I think the shark may be my favorite character, too. Because it's just funny how he's so cold, unemotional, and business-like about everything. Like a real shark.
And like the real mainstream media, he bashes Bush constantly, but he does it with a certain professional coldness.
That and he is to Donkey what Stimpy was to Ren.