Iqbal Theba originally studied to be an engineer, but he subsequently left school and moved to New York City. The acting bug had bitten him. Roles didn't come his way, so he eventually returned to school to study his craft. In the 1990s, he finally got work and he most notably starred as a cabbie on the sitcom "The George Carlin Show." Strangely enough, he also played cabbies on "Mad About You" and "Seinfeld." He had a recurring role on "ER" as Dr. Zagerby, but most audiences will know Theba best for his performance as Principal Figgins on "Glee."