Jessica Gower portrayed the role of Tonya, "the resident office hottie", in the unaired pilot for the series. She was then replaced by Pippa Black for the remaining episodes.
Rizwan Manji (Rajiv Gidwani), Thushari Jayasekera (Pinky), Guru Singh (Ajeet) & Parvesh Cheena (Gupta) all appeared in episode 4.3, Indian Takers (2013), of Arrested Development (2003) as Animesh, Bus Passenger, Jaideep & Kabir respectively. Parvesh Cheena also appeared in episode 4.5, A New Start (2013), as a taxi driver. Diedrich Bader (Charlie Davies) appeared in episode 4.14, Off the Hook (2013), as Gunner.
In the episode, A Sitar is Born, Charlie states that his dream is to become a voiceover artist for a bus line. In real life, Diedrich Bader, is a voiceover artist playing characters such as Hoss Delgado in The Grim Adventures of Billy and Mandy, Zeta in The Zeta Project, Tank in the film Surf's Up, and he has provided the voice of Bruce Wayne / Batman in multiple animated films and television series, beginning in 2008 with Batman: The Brave and the Bold.
Charlie's room in the episode Sari Charlie includes product placement for the following brands: Nascar and Chef Boyardee. Other products are names of items one would buy like Saltines, Corn Flakes, Frosted Flakes, and Red Vines, but the brand names are not shown on the packing or are too blurred to make out. These are all found on his shelf. On his desk, he has containers of Hormel and Faygo, a beverage company based out of Michigan.