I can recommend:

Black Orientations (Justin Slayer)

Asian Booty Worship (LT)

Asian Brotha Lovers (Exquisite)

The following Jules Jordan flicks have some awesome AF/BM scenes featuring Lexington Steele, Mandingo, Sabrine Maui, Nautica Thorn, Cris Taliana amongst others:

Once You Go Black, You Never Go Back Vols. 1,3,4
Invasian #1, #2.

I would absolutely get the Invasion flicks because they feature DPs (Luci Thai and Sabrine Maui) as well as Mandingo with Nautica Thorn (#2).

One thing to note. While these flicks contain large black cocks mixed with anal and sometimes DPs, I wouldn't consider the sex "rough". I've found that IR scenes rarely feature rough sex. Maybe its because the film makers figure a hard plowing from a black guy is sufficiently intense for the girl. There is also a cultural angle. Speaking as a black male, I don't find too many brothers who get off on the rough stuff.