After graduating from Columbia University, with a degree in cultural anthropology, Jamil decided on a career in television as a means of educating people about diversity. Since then she has had small parts in movies such as 25th Hour, Highway, as well as in the 2004 television series Espionage. She is perhaps better known for her regular appearances as the host of the NYCTV programs Cool In Your Code and Paradetown USA. She has also appeared in a number of television commercials and fashion ad campaigns. Additionally, Mullen performed the motion capture animations of Cate Archer for The Operative: No One Lives Forever.
Work for Half-Life 2
Mullen spent several days in a motion capture studio recording running, jumping, and combat animations, which were used as the starting point for Alyx's animation library.