Jonathan Taylor Thomas
The Home Improvement actor was a major teen heartthrob in the 1990s, but he has primarily stayed away from acting in order to concentrate on his studies. He graduated from Columbia University in 2010 and has only made a few cameo appearances.
Mary Kate and Ashley Olsen
The twin sisters, who first gained notoriety on Full House as Michelle Tanner together as infants, have given up acting. This dynamic duo appeared in films including When in Rome and New York Minute. They also had a streak of TV movies and direct-to-video releases. Now that they co-founded The Row, Olsenboy, and StyleMint, they are focusing more on the fashion industry.