HBO populates its comedy pilots

Dohring, Burton, Sossamon and, Mescudi join casts

HBO is firming up the casts of its comedy pilots "Washingtonienne" and "How to Make It in America," adding Jason Dohring and Kate Burton to the former and Shannyn Sossamon and and Scott Mescudi to the latter.

"Washingtonienne," based on Jessica Cutler's book, revolves around the professional and personal lives of three smart, sophisticated 28-year-old girls working on Capitol Hill.

Dohring will play Spencer, a senior legislative assistant for the same senator for whom Jackie (Rachel Taylor) works. Burton will play Joy, the senator's put-upon personal assistant.

Dohring ("Veronica Mars") is repped by Innovative Artists and manager Joel Stevens. Burton ("What Just Happened?") is repped by Gersh Agency and Principal Entertainment.

"America" centers on two enterprising downtown twentysomethings (Bryan Greenburg, Victor Rasuk) who hustle their way through New York determined to achieve the American Dream.

Sossamon will play Gingy, a gallery owner who is a close friend of the duo. Mescudi will play Domingo. Sossamon is repped by Paradigm.