Corbet began an acting career at age eleven with a guest role in an April 2000 episode of CBS' "The King of Queens", and he followed it up with voice work in the English version of the Japanese anime series "NieA under 7". Over the next few years, he was a regular on another anime series, "I My Me! Strawberry Eggs" (2001), and he guest-starred in a May 2002 episode of the WB sitcom "Greetings from Tucson". He also appeared in a May 2003 episode of Fox’s sitcom "Oliver Beene".