Shawn and Marlon weren't the funny ones. Never have been. (Damon and Keenan Ivory were.)
One of the things that made In Living Color popular (and now to a lesser extent The Chapelle Show) is that they are "allowed" to make fun of black stereotypes in ways that whites would be castigated for in this PC world.
(Interesting that on In Living Color they also made fun of gays and the handicapped. So I guess, at least at that time, that "black" trumped everything.)
"Shawn and Marlon weren't the funny ones. Never have been."
Perhaps they aren't funny to you, but you can't be so bold as to speak for everyone else. I find Shawn and Marlon to be very funny.
As far as making fun of black stereotypes....whites have been known to join in on this. All in the Family comes to mind. I remember one episode where Archie Bunker had dressed up as a black guy.
Why are you even keeping score on this issue? People need to learn how to lighten up and laugh at themselves. We tend to take ourselves too seriously sometimes.
I can totally see your side of this. On the other hand, this movie looks funny. It doesn't offend me, a white female. They did a brilliant job with the makeup and the Wayans are quite talented. I would like to see this. I think this schism of mine is defined as "cognitive dissonance".