The series so typecast the actors, however—as early as March 1970, Nichelle Nichols complained of "Star Trek" having "defined so narrowly as an actress"—that only Shatner and Nimoy continued working steadily during the 1970s, and even their work received little attention unless it was "Star Trek"-related. The others' income came mostly from personal appearances at "Star Trek" conventions attended by Trekkies; by 1978 DeForest Kelley, for example, earned up to $50,000 ($ today) annually. Residuals from the series ended in 1971 but in 1979, the first of six films starring the cast appeared; Kelley earned $1 million for the final film, "" (1991).