There's this one funny black guy she invites to the party (Oh yeah, I always specify that to help get a visual of the story.. =p Since it was brought up in another thread.) one of her friends that always makes hilarious remarks like "Dayyyuuum. That girl aint got no asian ass!" type of stuff. It's pretty funny, probably you'd have to be there. But yeah, the weird/funny hentai makes great for watching with friends IMO..
Mostly for personal use is the more down to earth hentai though and the hentai manga/doujins that I use. Seeing as how my turn on's don't include tentacles or anything like that. I do enjoy the rape fantasy stuff. Though I agree on the whining/crying stuff can get annoying in some of the sex scenes (I tend to keep the volume down low for that). This girl I used to know would always brag that she sounded like a hentai chick in bed and I'm just like, "So you whine and cry?" :lol
I believe the first animated hentai I ever watched was Fencer of Minerva when I was getting into puberty. If I remember correctly, it was about a princess that turned into a sex slave to travel with the guy she loved or something. Was pretty decent from what I remember, I liked it anyway.