How about any of the Rocco Animal Trainer flicks. Very instructional
Particularly when he deepthroats his czech-ubersluts while holding the nose...
No seriously, I would peep the Vivid style joints, or even peep the Spice channel since they edit out all the nasty bits. Good for starters.
My girl was digging the Rocco action, anal, facials and all... until he pulled his schlong out of one whore's ass and her cornhole was the size of the Lincoln Tunnel! She got nauseous swore off anal for a month after that.
Man, that GGG stuff is crazy. Anyone who says the Europeans don't have taste should check out that madness.
btw: I am fucking addicted to the GGG films - that's some of the hottest porn I've seen in a long, long time. Sperm Overdose
is a fucking classic. Love when the girls spit on each other!