Debbie Rochon- Terror Firmer, Tromeo and Juliet, Santa Claws, etc.
Also:
Trent Haaga- Probably most known for playing Jerry in Terror Firmer or the leader of the Diaper Mafia in Citizen Toxie: The Toxic Avenger 4. Good actor. Well, based on those flicks at least.
Steve Buscemi Not necessarily a "B Movie" type actor, but doesn't necessarily get recognized much for being an "A" Level type actor. Plus he's not against doing 'bad/b-movies' like Ghost World or Airheads.