7 Celebrities Who Worked For Other Stars Before They Were Famous

 Jon Hamm and Ellie Kemper

Back before his Mad Men days and before Kemper starred on The Unbreakable Kimmy Schmidt, Jon Hamm and Ellie Kemper knew each other away from Hollywood. Although Hamm didn’t directly work for Kemper, his employment ended up benefiting her because he was her high school drama teacher. “I was in ninth grade and he taught me the improv section of my theater class and everyone loved him,” Kemper revealed at a Television Critics Association panel.