Female action stars were pretty rare in 80s movies, but Cynthia Rothrock was one of those who smashed through the glass ceiling. Aided by her awesome karate skills, the sexy fun-sized martial artist was one of only a few white performers to make it big in the Hong Kong action film scene, and of course she played the lead role in the cult classic China O'Brien movies. She also managed to be a world champion in kata (drills) and weapons between 1981 and 1985. In her prime Cynthia was a knockout in more ways than one and probably the most dangerous person in the world under 5' 4" tall (excluding any relatives of Bruce Lee still kicking around). The actress has now mostly retired from cinema to be a mother and teach karate through her co-owned martial arts studio, and hasn't appeared in an action movie for more than seven years. Damn shame; once, she rocked.