16. Gates McFadden; Dr. Beverly Crusher, TNG
Few fans of Star Trek knew that Gates McFadden led an alternative life to her role as ship’s doctor (and occasional love interest of Captain Picard) on the USS Enterprise. As her alter-ego, Cheryl McFadden, she was also a choreographer. That was in this actual universe too, not an alternative one. Like many of the Star Trek cast, McFadden has stayed someone busy, never really experiencing another breakout role, but who needs to when many actors never experience even one in a lifetime? She did well by Star Trek, appearing in much of TNG and the movies that followed.