Sidney Poitier
Poitier was tone deaf, and could not sing or dance. This is what black actors did at the time, so audiences did not like him. He worked very hard to improve his acting skills, and to get rid of his Bahamian accent. He eventually got a leading role in the Broadway play called Lysistrata and he got excellent reviews. At the end of 1949, he got a job working for Darryl F. Zanuck in the movie No Way Out (1950). He played a doctor treating a white bigot. After this job, he soon got more movie roles. The acting jobs he got were better and more interesting than the roles most black actors played at the time.