I ako a Stewart i te American Academy of Dramatic Arts, a, i haereere ia i te whare tapere a rohe mo nga tau e whitu i mua i tana uru atu ki te pouaka whakaata me te mahi a Razor Dee, he DJ i te waa whakamutunga o te New WKRP i Cincinnati i te tau 1992. I whiwhi a Stewart i tana kaari Kaituku Kaituku Kaituku i a ia e mahi ana mo te haerenga Shakey Quakey a Hanna-Barbera, engari i mutu i muri mai mo te tango i te upoko o tana kakahu i mua o nga tamariki. I te 1996, i tukuna ia ki te 3rd Rock from the Sun, i roa mo nga wa e ono. I te whakaaturanga, i mohiotia a Stewart mo ana taranata i te whakaari tinana me tana ahuatanga "squinting" kanohi kanohi. I te teitei me te rongonui o te 3rd Rock from the Sun, i puta a Stewart i roto i nga whakaaturanga maha me te kaikorero mo te Clamato beverage.
American Academy of Dramatic Arts (Te Whare Wānanga o Amerika mō ngā Toi Whakaari)