I mostly watch gay porn.
I like to watch mostly black or hispanic guys (Sometimes white guys when I'm in the mood, and depending on how they look. Now long hair, other stuff...) jacking off, amateur or otherwise, most of which can be found on xtube. Or, amateur "'straight' guy getting sucked off" porn (again, xtube.). With that being said, my favorite site at the momment is "Military Classified", and I'm not sure if that classifies as "amareur".
Those rare times when I do watch straight porn (It's been maybe 2 months or so.), Almost anything interracial will do. I have no big preference except black on white.