From their beginnings to the present day, B movies have provided opportunities both for those coming up in the profession and others whose careers are waning. Celebrated filmmakers such as Anthony Mann and Jonathan Demme learned their craft in B movies. They are where actors such as John Wayne and Jack Nicholson first became established, and they have provided work for former A movie actors, such as Vincent Price and Karen Black. Some actors, such as Bela Lugosi, Eddie Constantine, Bruce Campbell and Pam Grier, worked in B movies for most of their careers. The term "B actor" is sometimes used to refer to a performer who finds work primarily or exclusively in B pictures.