I would however have to disagree with jheem-based on gut feeling, I definitely would not name intellectual as the pejorative of the two.

Well, I did say: "To me, intellectual has a slightly more pejorative connotation to it than intelligent." Then, you'd say that intelligent and intellectual both have the same connotations? (Because, for me, intelligent cannot be the pejorative of the two.) I guess what I was trying to say is that while one can learn to become an intellectual, one is either intelligent or not. And like with many things that can be learned, one can be a bad intellectual or a good one, but one is either intelligent or not.