Things (1989) with Amber Lynn.

I was going to say that, even though her part is pretty ridiculous. I don't know why a news report had to be spliced into that movie. They probably wanted to seem relevant to the horror crowd by namedropping George A. Romero for no good reason. Why get a porn actress if you wont even get her naked?

Maybe they figured a pointless porn actress with clothes is better than no porn actress at all.

Excision (2012) with Traci Lords

Rabid
Shock Em Dead
Blade

If we add male porn stars than Cannibal Holocaust and Last House on the Left.

Sandra Peabody from The Last House on the Left did some roles in soft core movies.

I thought Shock Em Dead was a huge letdown. I'm a fan of rock n' roll horror flicks, especially from that time frame, but something was missing with that one.

Rabid for sure, but I also have a (pretty big) sneaky fondness for Smash Cut.