EMMY-WINNING actor Jim Parsons is best known for his role as Sheldon Cooper on The Big Bang Theory (《生活大爆炸》). Sheldon is a super smart physicist but very stubborn (固执的) and socially challenged. Now Parsons is known for playing another misfit (“怪咖”). He voiced Oh, a tiny purple alien, in the cartoon animation Home (《疯狂外星人》).