His initials are T.P. for a reason...
I've only dug one of his movies (Daddy's Little Girls or some shit...) The rest that I've seen are terrible. I think you have to be a little dumb to get any real enjoyment out of his work, but that's just my opinion.
It's not so much that he wears drag, because not all of his flicks are Madea flicks, but there seems to be a common denominator to them in the sense that you have to be completely brain dead to learn anything from them. Most of the messages in them are things that you're supposed to learn and master before the age of 15...