Nick Manning was a massive mainstream star who had many highly regarded projects. Just ask him.

He was probably going to win an Oscar and Emmy and Cable Ace award all in the same year. But he decided he rather be DROPPING LOADS!!!!!

I saw Kaylani Lei in a Cinemax soft-core series and I was surprised that she had acting ability. I know that isn't really mainstream. But I think she could probably pull off a legitimate role if she was ever cast in one.